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A company wants to spend equal amounts of money for the

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Senior Manager
Joined: 23 May 2005
Posts: 266
Location: Sing/ HK
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A company wants to spend equal amounts of money for the [#permalink]  23 Oct 2006, 00:27
00:00

Difficulty:

(N/A)

Question Stats:

100% (03:28) correct 0% (00:00) wrong based on 3 sessions
A company wants to spend equal amounts of money for the purchase of two types of computer printers costing $600 and$375 per unit, respectively. What is the fewest number of computer printers that the company can purchase?

a. 13
b. 12
c. 10
d. 8
e. 5

I wasn't too sure how to set-up the equation for this one. What i can extract from the q stem is 600x = 375y. But then what? Is this a case of backsolving?
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Impossible is nothing

Manager
Joined: 07 Jun 2006
Posts: 113
Followers: 2

Kudos [?]: 7 [0], given: 0

I think the Ans is A... but may b wrong as I have tried to solve this in a hurry.

We know that...
600x = 375y

x/y = 5/8

Now try dividing the numbers given in this ratio....The only possible choice is A
Manager
Joined: 12 Sep 2006
Posts: 92
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Kudos [?]: 2 [0], given: 0

I got A as well,

using LCM formula

LCM for 600 and 375=3000, therefore 5 + 8=13 computers
Intern
Joined: 22 Oct 2006
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keeeeeekse wrote:
I got A as well,

using LCM formula

LCM for 600 and 375=3000, therefore 5 + 8=13 computers

how do you reach to the 5+8 part >> please explain
VP
Joined: 15 Jul 2004
Posts: 1473
Schools: Wharton (R2 - submitted); HBS (R2 - submitted); IIMA (admitted for 1 year PGPX)
Followers: 17

Kudos [?]: 116 [1] , given: 13

1
KUDOS
bonnerjis wrote:
keeeeeekse wrote:
I got A as well,

using LCM formula

LCM for 600 and 375=3000, therefore 5 + 8=13 computers

how do you reach to the 5+8 part >> please explain

600/375 = 8/5

That means 5 times 600 and 8 times 375 yield the same result = 3000. Therefore the company can spend equal amounts on both printers by buying 5 of the 600 variety and 8 of the 375. Thus total becomes 13
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