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# N is the number of products being sold. If N < 10, each

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N is the number of products being sold. If N < 10, each [#permalink]

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27 Nov 2005, 07:48
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68. N is the number of products being sold.
If N < 10, each product is sold at \$200.
If 10 <= N < 20, each product is sold at \$10 plus a fixed charge of \$100.
If N >= 20, each product is sold at \$20.

(Note that if N is 11, 10 products are sold at \$200 each, and 1 product is sold at \$10 plus a fixed charge of \$100.)

How many products were sold yesterday?

1) Yesterday 2 more products were sold than today.
2) The revenue from yesterday is by \$10 greater than today's revenue.

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Last edited by gamjatang on 01 Dec 2005, 00:15, edited 1 time in total.

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27 Nov 2005, 11:41
I think C is sufficient...

(2) says net revenue is 200*10+100+10(2)< yesterday...

net revenue today is 200*10 + 100+10(1)

so B is insufficient..casuse we could have sold 13, 14 products

now if (1) is used then we know that had 2 more products sold...alone insuff

but 1+2 sufficient

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Re: DS - (AG) Integer [#permalink]

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27 Nov 2005, 20:49
gamjatang wrote:
68. N is the number of products being sold.
If N < 10, each product is sold at \$200.
If 10 <= N < 20, each product is sold at \$10 plus a fixed charge of \$100.
If N >= 20, each product is sold at \$20.

(Note that if N is 11, 10 products are sold at \$200 each, and 1 product is sold at \$10 plus a fixed charge of \$100.)

How many products were sold yesterday?

1) Yesterday 2 more products were sold than today.
2) The revenue from yesterday is by \$10 greater than today's revenue.

can you clarify the blue part? ...the note is not sufficient coz it uses "1 product" as an example

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Re: DS - (AG) Integer [#permalink]

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27 Nov 2005, 20:51
laxieqv wrote:
gamjatang wrote:
68. N is the number of products being sold.
If N < 10, each product is sold at \$200.
If 10 <= N < 20, each product is sold at \$10 plus a fixed charge of \$100.
If N >= 20, each product is sold at \$20.

(Note that if N is 11, 10 products are sold at \$200 each, and 1 product is sold at \$10 plus a fixed charge of \$100.)

How many products were sold yesterday?

1) Yesterday 2 more products were sold than today.
2) The revenue from yesterday is by \$10 greater than today's revenue.

can you clarify the blue part? ...the note is not sufficient coz it uses "1 product" as an example

If N is 11, 10 products are sold at \$200 each, and 1 product is sold at \$10 plus a fixed charge of \$100.

If N is 12, 10 products are sold at \$200 each, and 2 products are sold at \$20 plus a fixed charge of \$100.

If N is 13, 10 products are sold at \$200 each, and 3 products are sold at \$30 plus a fixed charge of \$100.
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27 Nov 2005, 21:14
sure, it's E . I'll explain if get it correct

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Re: DS - (AG) Integer [#permalink]

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28 Nov 2005, 11:25
gamjatang wrote:
68. N is the number of products being sold.
If N < 10, each product is sold at \$200.
If 10 <= N < 20, each product is sold at \$10 plus a fixed charge of \$100.
If N >= 20, each product is sold at \$20.

(Note that if N is 11, 10 products are sold at \$200 each, and 1 product is sold at \$10 plus a fixed charge of \$100.)

How many products were sold yesterday?

1) Yesterday 2 more products were sold than today.
2) The revenue from yesterday is by \$10 greater than today's revenue.

well, i think what matters here is that we shouldn't understand the number of products sold starts from 0 each day ....instead, we should understand that the number of ticket sold yesterday is an accumulated number from the day before, before before yesterday and so forth.

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28 Nov 2005, 18:58
gamjatang wrote:
E is not the right answer.

20<n>=10. curious to know OA and OE.

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28 Nov 2005, 19:54
(1) Yesterday sold N, today sold N+2. Nothing useful is revelaed.

(2) Again, we are told nothing useful here.

Using (1) and (2),
we can't really compute. We do not know the starting value of N, so we can't decide which payment method to peg to.

Ans should be E

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29 Nov 2005, 03:19
o bba, please provide OA then let us discuss further why OA is not E

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Re: DS - (AG) Integer [#permalink]

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29 Nov 2005, 05:27
gamjatang wrote:
68. N is the number of products being sold.
If N < 10, each product is sold at \$200.
If 10 <= N < 20, each product is sold at \$10 plus a fixed charge of \$100.
If N >= 20, each product is sold at \$20.

(Note that if N is 11, 10 products are sold at \$200 each, and 1 product is sold at \$10 plus a fixed charge of \$100.)

How many products were sold yesterday?

1) Yesterday 2 more products were sold than today.
2) The revenue from yesterday is by \$10 greater than today's revenue.

I still think it is E.
1) does not give out anything
2) says that the no of products sold on both days falls in the 10-20 category and one book extra was sold yesterday.
But it can be 12 and 11 or 13 and 12 etc. -- insuff

1 and 2-- could not get any nos that satisfy this. -- insuf

Looking forward to see the OA and OE

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29 Nov 2005, 08:04
Tha OA is (C).

I am sorry, but I do not have OE.
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29 Nov 2005, 08:16
gamjatang wrote:
Tha OA is (C).

I am sorry, but I do not have OE.

huh?! ...C?! ...almost impossible

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Re: DS - (AG) Integer [#permalink]

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29 Nov 2005, 10:22
gamjatang wrote:
68. N is the number of products being sold.
If N < 10, each product is sold at \$200.
If 10 <= N < 20, each product is sold at \$10 plus a fixed charge of \$100.
If N >= 20, each product is sold at \$20.

(Note that if N is 11, 10 products are sold at \$200 each, and 1 product is sold at \$10 plus a fixed charge of \$100.)

How many products were sold yesterday?

1) Yesterday 2 more products were sold than today.
2) The revenue from yesterday is by \$10 greater than today's revenue.

If I understand the stem correctly, each product is worth of at least \$10 or more, and thus two extra product would be worth of at least \$20. From (2) we know yesterday's number is between 11 and 17. Combine (1) and (2) there is no possible solution.

Or let's look at it in more details:
Let x be yesterday's number. Two more products would result in the following revenue differences:

If x<=8, the rev difference would be \$400.
If x=9, the rev difference would be \$310.
If x=10, the rev difference would be \$120.
If 11<=x<=17, the rev difference would be \$20.
If x=18, the rev difference would be \$30.
If x>=19, the rev difference would be \$40.

The only occasions where we would be able to determine x would be if (2) says the revenue difference is 310, 120, or 30.
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Re: DS - (AG) Integer   [#permalink] 29 Nov 2005, 10:22
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