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GMAT PREP I WORD TRANSLATION

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GMAT PREP I WORD TRANSLATION

by pkw209 » Tue Dec 29, 2009 10:25 am
Hey all,

Got equal number of equations as number of variables so thought the answer was C. A brief explanation would be very much appreciated. Thanks!

59) M orders 50 computers and printers. N orders 60 computers and printers. How many computers did M order?

a. M & N ordered the same number of computers
b. N ordered 10 more printers than M
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Source: — Data Sufficiency |

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by Brent@GMATPrepNow » Tue Dec 29, 2009 5:51 pm
pkw209 wrote:Hey all,

Got equal number of equations as number of variables so thought the answer was C. A brief explanation would be very much appreciated. Thanks!

59) M orders 50 computers and printers. N orders 60 computers and printers. How many computers did M order?

a. M & N ordered the same number of computers
b. N ordered 10 more printers than M
It's useful to notice that, once we know statement a, statement b doesn't provide any extra information (e.g., if M and N both ordered 40 computers, then N must have ordered 10 more printers than M.)

Similarly, once we know statement b, statement a doesn't provide any extra information (e.g., if M ordered 5 printers and N ordered 15 printers, then M and N must have ordered 45 computers each.)

In other words, both statements provide the same information. Given this, the answer must be either D or E.
By trying a few values, we can see that the answer must be E.
Brent Hanneson - Creator of GMATPrepNow.com
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by pkw209 » Wed Dec 30, 2009 1:02 pm
Thanks Brent. One thing I've definitely come to realize is that a lot of the quant stuff can be solved conceptually rather than algebraically. Understanding is key. jumping in and trying to solve with variables and numbers is not always the best approach.
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