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31 Jan 2010, 14:29
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John sold 100 shares of stock for $96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock? A. No loss or gain B. Gain of$400
C. Loss of $400 D. Gain of$800
E. Loss of $800 Most Helpful Expert Reply Math Expert Joined: 02 Sep 2009 Posts: 58954 Re: What's the fastest way to asnwer this problem? [#permalink] Show Tags 31 Jan 2010, 14:49 8 9 GMATFIGHTER wrote: John sold 100 shares of stock for$96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock?

A. No loss or gain
B. Gain of $400 C. Loss of$400
D. Gain of $800 E. Loss of$800

Strange wording. Anyway:

Cost of the profitable stock: x=96/1.2=80, so profit from it 96-80=16. Total profit 50*16=800
Cost of the non-profitable stock: y=96/0.8=120, so loss from it 96-120=-24. Total loss 50*(-24)=-1200

Total loss: 800+(-1200)=-400.

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31 Jan 2010, 14:53
2
GMATFIGHTER wrote:
John sold 100 shares of stock for $96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock? a) No loss or gain b) Gain of$400

c) Loss of $400 d) Gain of$800

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14 Sep 2014, 08:56
1
One will always have loss in such case;

Direct formula:

Total loss amount = $$\frac{2 X P^2}{(100^2 - P^2)$$

Total loss % = $$\frac{P^2}{100^2}$$

X = common sales price of two different items = in this case 96x50
P = % loss = % gain = in this case 20
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09 Jun 2016, 11:06
1
sabrina3509 wrote:
John sold 100 shares of stock for $96 per share. For half his shares, this represented a 20% profit; for the other half this represented a 20% loss. What was the net gain or net loss on this sale of stock? a) No loss or gain b) gain of$400
c) Loss of $400 d) gain of$800
e) loss of $800 Could you show a simple step by step for solving and then also show the most efficient method for solving? 50 shares for$96 gave 20% profit.
This means Cost of each share = $80. Net cost of 50 shares =$4000

50 shares for $96 gave 20% loss. This means cost of each share =$120
Net cost of 50 shares = $6000 Total net cost = 6000 + 4000 =$10000
Total net seeing price = 96*100 = 9600

Hence there is a loos of $400 Correct Option: C Intern Joined: 28 Aug 2016 Posts: 1 Re: John sold 100 shares of stock for$96 per share. For half  [#permalink]

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29 Aug 2016, 09:17
1
The direct formula in such cases is : a+b+ab/100 where a and b are profit and loss.
so here a=+20 and b =-20
+20-20+20(-20)/100=4%loss
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31 Jan 2010, 23:48
GMATFIGHTER wrote:
John sold 100 shares of stock for $96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock? a) No loss or gain b) Gain of$400

c) Loss of $400 d) Gain of$800

e) Loss of $800 Would you guys please show me a short cut to answer this problem? A much faster approach would be appreciated! Thanks! Total Selling Price =$9600

For 50 shares it is 20% profit and for other 50 it is 20% Loss.

For 20% profit
6/5*cost = 9600

cost=$80 For 20% Loss 4/5*cost = 9600 cost=$120

Total cost = $80*50 +$120*50 = 10,000

Therefore Loss = 10,000 - 9600 = $400 Senior Manager Status: Finally Done. Admitted in Kellogg for 2015 intake Joined: 25 Jun 2011 Posts: 439 Location: United Kingdom Concentration: International Business, Strategy GMAT 1: 730 Q49 V45 GPA: 2.9 WE: Information Technology (Consulting) Re: What's the fastest way to asnwer this problem? [#permalink] Show Tags 22 Dec 2013, 15:29 Sure... S.P of 1 share = 96 S.P of 50 shares = 50 * 96 = 4800 C.P of 1 share = x C.P of 50 shares = 50x Profit = 4800 - 50x --------------------[S.P - C.P] = 20 % profit 20% profit = 4800 - 50x After this I struggle. can you please help? _________________ Best Regards, E. MGMAT 1 --> 530 MGMAT 2--> 640 MGMAT 3 ---> 610 GMAT ==> 730 Math Expert Joined: 02 Sep 2009 Posts: 58954 Re: What's the fastest way to asnwer this problem? [#permalink] Show Tags 22 Dec 2013, 23:55 enigma123 wrote: Sure... S.P of 1 share = 96 S.P of 50 shares = 50 * 96 = 4800 C.P of 1 share = x C.P of 50 shares = 50x Profit = 4800 - 50x --------------------[S.P - C.P] = 20 % profit 20% profit = 4800 - 50x After this I struggle. can you please help? First of all, John sold ALL 100 shares of stock for$96 per share, not only 50 of them.

Next, cost (CP) of the profitable stock was 96/1.2 = $80 and the cost of the non-profitable stock was 96/0.8 =$120. Thus the profit was 50*(96-80) = $800 and the loss was 50*(120-96) =$1,200, which give s the overall loss of $400. Hope it's clear. _________________ Senior Manager Joined: 06 Aug 2011 Posts: 317 Re: John sold 100 shares of stock for$96 per share. For half  [#permalink]

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23 Dec 2013, 02:24
simple percetage question...

96=5/4 of x (its better to write in fraction rather in percentage, I have tried in both way, bt it tuk me longer time with decimals)

x=80.

profit is of 16 dollar per share. so 16*50=800.

4/5 of x=96

x=120 (this is the value on which he purchased 50 stocks)

loss of 24 dollar per share....24*50=1200..... so 1200 loss-800 profit=net loss of 400.
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Re: John sold 100 shares of stock for $96 per share. For half [#permalink] Show Tags 09 Jun 2016, 21:46 GMATFIGHTER wrote: John sold 100 shares of stock for$96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock?

A. No loss or gain
B. Gain of $400 C. Loss of$400
D. Gain of $800 E. Loss of$800

With the same selling price, if we have a profit of a% on one and a loss of a% on another, in all we always have a loss of (a^2/100)%. This is discussed in detail here: http://www.veritasprep.com/blog/2014/04 ... n-another/

So here, we have a loss of (20^2/100)% = 4%

Cost Price * 96/100 = Selling Price = 96 *100
Cost Price = 10,000

Amount of Loss = 4% of 10,000 = $400 Answer (C) _________________ Karishma Veritas Prep GMAT Instructor Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options > Intern Status: Vice President Joined: 16 May 2016 Posts: 12 Location: India Concentration: Finance, Strategy GMAT 1: 700 Q48 V38 GPA: 2 WE: Operations (Other) Re: John sold 100 shares of stock for$96 per share. For half  [#permalink]

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29 Aug 2016, 08:36
GMATFIGHTER wrote:
John sold 100 shares of stock for $96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock? A. No loss or gain B. Gain of$400
C. Loss of $400 D. Gain of$800
E. Loss of $800 Very tricky question, consider this question as A person sold the same product for 4800 and on one product he gained 20% and on another product he lost 20%. In such cases there will always be overall loss and never gain. So, you can use formula Loss = (2x^2s)/(100^2-x^2) where x = common profit/loss % s = Selling price Applying the formula you will get Loss = 2*20*20*4800/(120*80) = 400 _________________ Route to 700+ Intern Status: Vice President Joined: 16 May 2016 Posts: 12 Location: India Concentration: Finance, Strategy GMAT 1: 700 Q48 V38 GPA: 2 WE: Operations (Other) Re: John sold 100 shares of stock for$96 per share. For half  [#permalink]

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29 Aug 2016, 10:41
Meenakshi13 wrote:
The direct formula in such cases is : a+b+ab/100 where a and b are profit and loss.
so here a=+20 and b =-20
+20-20+20(-20)/100=4%loss

Hi Meenakshi 13,

Because a and b are equal in the scenario I explained your formula will eventually become x^2/100 which is the formula for OVERALL LOSS %.
The question asks for amount so we will use 2x^2s/(100^2-x^2)
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Re: John sold 100 shares of stock for $96 per share. For half [#permalink] Show Tags 16 Oct 2016, 14:32 1.2x = 96$
x=80
so he purchased 50 shares at the price of 80$/share 0.8y = 96$
y=120 - so he purchased the other 50 at the price of 120

now
50*80 = 4000$50*120 = 100*60 = 6000$
total spent - 10,000$total received - 9,600$
net loss - 400$Current Student Status: DONE! Joined: 05 Sep 2016 Posts: 355 Re: John sold 100 shares of stock for$96 per share. For half  [#permalink]

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06 Dec 2016, 19:42
50 shares:

x+0.20x=96
1.2x=96
x=80

Orig: 50x$80/each =$4000
New: 50x$96/each =$4800
------------------------
$800 gain 50 shares: x-0.20x=96 0.80x=96 x=120 Orig: 50x$120/each=$6000 New: 50x$96/each = $4800 -------------------------$1200 loss

Net loss/profit = 800-1200 = 400 loss

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Re: John sold 100 shares of stock for $96 per share. For half [#permalink] Show Tags 12 Feb 2018, 17:12 GMATFIGHTER wrote: John sold 100 shares of stock for$96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock?

A. No loss or gain
B. Gain of $400 C. Loss of$400
D. Gain of $800 E. Loss of$800

For the 20% profit we have:

Profit = 0.2c

r - c = 0.2c

r = 1.2c

Since r = 96, we have:

96 = 1.2c

80 = c

So the profit was 96 - 80 = 16 dollars per share for 50 shares of stocks.

For the 20% loss we have:

Profit = -0.2c

r - c = -0.2c

r = 0.8c

Since r = 96, we have:

96 = 0.8c

120 = c

So the loss was 120 - 96 = 24 dollars per share for the other 50 shares of stocks

Thus, the total net loss is 24(50) - 16(50) = (24 - 16)(50) = 8(50) = 400 dollars.

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Re: John sold 100 shares of stock for $96 per share. For half [#permalink] Show Tags 14 Aug 2018, 07:28 Top Contributor GMATFIGHTER wrote: John sold 100 shares of stock for$96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock?

A. No loss or gain
B. Gain of $400 C. Loss of$400
D. Gain of $800 E. Loss of$800

Let x be the ORIGINAL price of each share that sold for a 20% PROFIT
So, 1.2x = price of each share that sold for a 20% profit
In other words, 1.2x = $96 So, x = 96/1.2 =$80
So, these shares ORIGINALLY cost $80 each Let y be the ORIGINAL price of each share that sold for a 20% LOSS So, 0.8x = price of each share that sold for a 20% loss In other words, 0.8x =$96
So, x = 96/0.8 = $120 So, these shares ORIGINALLY cost$120 each

Let's first determine how much money John spent to BUY the 100 shares
50 shares at $80 apiece cost$4000
50 shares at $120 apiece cost$6000
TOTAL cost to BUY = $4000 +$6000 = $10,000 Now determine how much money John RECEIVED when we SOLD the 100 shares Since he sold all 100 shares for$96 each, the TOTAL amount received = $9600 So, John SPENT$10,000 and he RECEIVED $9600 This represents a LOSS of$400

Cheers,
Brent
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Re: John sold 100 shares of stock for $96 per share. For half [#permalink] Show Tags 15 Aug 2018, 02:00 GMATFIGHTER wrote: John sold 100 shares of stock for$96 per share. For half his shares, this represented a 20% profit; for the other half, this represented a 20% loss. What was the net gain or net loss on this sale of stock?

A. No loss or gain
B. Gain of $400 C. Loss of$400
D. Gain of $800 E. Loss of$800

CP of first 50 shares is 96/120*100 = 80 each
CP of next 50 shares is 96/80*100 = 120 each

Total CP of 100 Shares is 80*50 + 1200*50 = 10000

SP of 100 Shares is 9600

Net Loss is 400 , Answer must be (C)
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