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# A certain business produced x rakes each month form November

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sum of the costs incurred at the beginning of the month
=(1+2+....+7)X/2 * .1 $=1.4X$
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x + x + x + x -> rakes produced

x/2 * 8 -> Rakes exported

Storage cost =

7x/2 * 0.1 + 3x + 0.1 + 5x/2 * 0.1 + 2x * 0.1 + 3x/2 * 0.1 + x * 0.1 + x/2 * 0.1

( 3.5 + 3 + 2.5 + 2 + 1.5 + 1 + 0.5)x * 0.1

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Total Rakes produced = 4 months *x
Total Rakes sold each month March - OCt = x/2
Storage cost (3.5 + 3+ 2.5+2+1.5+1+0.5) x * 0.1

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the costs are = 7x/2 +5x/2+3x/2+x/2+3x+3x+x = 14x
14x * 0.1 = 1.4x
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Total rakes produced 4x.

Rakes in the storage first month 3.5x
Rakes in the storage in the last month 0.5x
Average rakes in the storage 2x
Number of months rakes are in the storage 7 (There are no rakes in the storage in Oct)

so 2x * 0.1 * 8 = 1.4x
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Re: A certain business produced x rakes each month form November [#permalink]
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Picking smart numbers is an easy and smart solution here. Here's algebra as well:

4x rakes are produced, x/2 are sold each month, and we're assuming at the beginning of each month.

So storage costs
= .1((4x-x/2)+(4x-2x/2)+(4x-3x/2)+(4x-4x/2)+(4x-5x/2)+(4x-6x/2)+(4x-7x/2)+(4x-8x/2))
= .1(8*4x-36x/2)
= .1(32x-18x)
= .1(14x)
= 1.4x
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Re: A certain business produced x rakes each month form November [#permalink]
can any one please explain this problem piece by piece..didnt get a single word of this question..
n why r u doing 8-1=7..

kindly explain this
thanku.
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Re: A certain business produced x rakes each month form November [#permalink]
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shreygupta3192
can any one please explain this problem piece by piece..didnt get a single word of this question..
n why r u doing 8-1=7..

kindly explain this
thanku.

Let $$x=2$$:

The business produced x rakes each month from November through February --> from November to February $$4x=8$$ rakes were produced.
The business shipped x/2 rakes, so 1 rake, at the beginning of March and started paying storage costs in March, so in March business paid for storage of 8-1=7 rakes.

Similar question to practice: the-acme-company-manufactured-x-brooms-per-month-from-januar-144318.html
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Re: A certain business produced x rakes each month form November [#permalink]
udaymathapati
A certain business produced x rakes each month form November through February and shipped x/2 rakes at the beginning of each month from March through October. The business paid no storage costs for the rakes from November through February, but it paid storage costs of $0.10 per rake each month from March through October for the rakes that had not been shipped. In terms of x, what was the total storage cost, in dollars, that the business paid for the rakes for the 12 months form November through October? A. 0.40x B. 1.20x C. 1.40x D. 1.60x E. 3.20x You can solve this one using 3 Methods Method 1 Number picking (see Bunuel's approach) Method 2 Brute force; Just list the number of monats shipments etc. Month......1.....2....3........4......5......6.......7.....8 Storage...3,5...3....2,5.....2.....1,5....1......0,5...0 Rakes Costs....0,35..0,3...0,25..0,2...0,15..0,1...0,05..0 --> 1,4x Method 3 Number of terms * Average = 7*2=14 14*0,1=1,4 Director Joined: 26 Oct 2016 Posts: 506 Own Kudos [?]: 3422 [1] Given Kudos: 877 Location: United States Concentration: Marketing, International Business Schools: HBS '19 GMAT 1: 770 Q51 V44 GPA: 4 WE:Education (Education) Re: A certain business produced x rakes each month form November [#permalink] 1 Kudos Please find the solution below in terms of algebra. Attachments business.PNG [ 11.37 KiB | Viewed 44608 times ] business.PNG [ 11.37 KiB | Viewed 44607 times ] Manager Joined: 15 Dec 2015 Posts: 95 Own Kudos [?]: 847 [1] Given Kudos: 83 GMAT 1: 680 Q49 V34 GPA: 4 WE:Information Technology (Computer Software) Re: A certain business produced x rakes each month form November [#permalink] 1 Kudos Explanation: Given certain business produced x rakes each month from November through February and shipped x/2 rakes at the beginning of each month from March through October. From November to February, i.e. in 4 months, x rakes each month are produced. ⇒ Total number of racks produced = 4x Also given the business paid no storage costs for the rakes from November through February, but it paid storage costs of$0.10 per rake each month from March through October for the rakes that had not been shipped.

From March to October, i.e. in 8 months, x/2 rakes each month are shipped. Hence, from March onwards, number of rakes decreases by x/2 at the beginning of every month.

Total storage cost in 12 months
= Storage cost from Nov. to Feb. + storage cost from March to Oct.
= 0 + storage cost from March to Oct.

Number of racks remaining in March = 4x − x/2 = 7x/2. Similarly number of racks remaining from April through September will be 3x, 5x/2, 2x, 3x/2, x and x/2.

Total storage cost from March to Oct. = 0.10 (7x/2 + 3x + 5x/2 + 2x + 3x/2 + x + x/2) = 1.40x

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Re: A certain business produced x rakes each month form November [#permalink]
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udaymathapati
A certain business produced x rakes each month form November through February and shipped x/2 rakes at the beginning of each month from March through October. The business paid no storage costs for the rakes from November through February, but it paid storage costs of $0.10 per rake each month from March through October for the rakes that had not been shipped. In terms of x, what was the total storage cost, in dollars, that the business paid for the rakes for the 12 months form November through October? A. 0.40x B. 1.20x C. 1.40x D. 1.60x E. 3.20x We know that the business didn’t need to pay storage costs from November to February. So let’s begin by analyzing what happened in March. Just before March, the business had 4x rakes, and at the beginning of March, they shipped out x/2 rakes; therefore, for the month of March, they had 4x - x/2 = 8x/2 - x/2 = 7x/2 rakes that required storage costs of$0.10 each.

Since they shipped out x/2 rakes at the beginning of each of the subsequent months, from April to October, the number of rakes in storage in these months are 6x/2, 5x/2, 4x/2, 3x/2, 2x/2, x/2 and 0, respectively. Including the 7x/2 rakes in March, the total number of rakes that require storage costs is:

(7x/2 + 0)/2 * 8 = 7x/2 * 4 = 14x

Since each rake cost \$0.10 to store, the total storage costs are 14x * 0.1 = 1.4x dollars.

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Re: A certain business produced x rakes each month form November [#permalink]
it might be too obvious if you say that shipment is in beginning of month and payment later, but still this is the only trick in the question the rest is simple
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Re: A certain business produced x rakes each month form November [#permalink]
After the first rake is shipped, 7 rakes are left and the storage cost of 7 rakes is 0.7
After this, one more rake is shipped and the storage cost for 6 rakes is 0.6

Therefore, total storage cost = 0.7+0.6+0.5+0.4+0.3+0.2+0.1 = 1.4­
Re: A certain business produced x rakes each month form November [#permalink]