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GMAT practice test PS problem

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Source: — Problem Solving |
Senior | Next Rank: 100 Posts
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by rossmj » Mon Apr 13, 2009 9:50 am
((1/5)^m)*((1/4)^18)=1/(2(10)^35)

1/(5^m)(2^36)=1/(2(2^35)(5^35)

1/(5^m)(2^36)=1/(2^36)(5^35)

2^36 cancels out

1/5^m=1/5^35

Same base means you can drop it

m=35

Review exponent rules and recognize factors and this problem will look much easier
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Junior | Next Rank: 30 Posts
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by bronzie35 » Mon Apr 13, 2009 12:02 pm
Thanks rossmj. It certainly looks easy now. Thanks.
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