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How many people did Apex .....

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How many people did Apex .....

by moonlite » Sat Sep 27, 2008 8:34 am
How many people did Apex Company employ in 1990?
(1) The company employed 538 more people in 1991 than in 1990.
(2) The company employed 20 percent more people in 1991 than in 1990.

Please explain. Thanks.

B

I thought you would need both to termine "how many"?
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by Saffa » Sat Sep 27, 2008 8:56 am
you are right, but with 20% being 538 you can easily calculate what can be 100%

You've said B, but I'm quite sure it must be C
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by Stuart@KaplanGMAT » Sat Sep 27, 2008 10:53 am
Saffa wrote:you are right, but with 20% being 538 you can easily calculate what can be 100%

You've said B, but I'm quite sure it must be C
Indeed, (C) is the correct answer.

Here's a good general rule for DS:

If you're asked to calculate a rate/%/ratio, you don't necessarily need actual numbers.

If you're asked to calculate an actual number, you need at least 1 actual number somewhere in the information.

Statement (2) only gives us a %. There's no way to solve for the number of employees without at least one number in the information.
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Re: How many people did Apex .....

by stop@800 » Sat Sep 27, 2008 11:08 am
moonlite wrote:How many people did Apex Company employ in 1990?
(1) The company employed 538 more people in 1991 than in 1990.
(2) The company employed 20 percent more people in 1991 than in 1990.

Please explain. Thanks.

B
Can you please let us know sourse of this and a<b<c question?
I wants to know so that I remain extra cautious while solving them :)

I thought you would need both to termine "how many"?
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