GMATPrep Problem

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GMATPrep Problem

by jaydeer44 » Sat Mar 22, 2008 7:38 am
Can someone please tell me what is the best way to figure out the attached problem?

The answer is D) 35

Thanks a lot!
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by raider » Sat Mar 22, 2008 11:43 am
1. Left hand side: (1/5^m) ( 1/4^18)

2. Left hand side: (1/5^m) (1/2^36)

3. Right hand side: ( 1/ (2 * (2* 5)^35) )

4. Right hand side: ( 1 / (2 * 2^35 * 5^35) )

5. Right hand side: (1 /(2^36 * 5^35)

6. 1/2^36 is same on both sides hence can be cancelled.

7. 1/5^m = 1/5^35

8. m= 35