GMAT Prep: Algebra

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kookoo4tofu: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Mon May 07, 2007 5:23 am

by kookoo4tofu » Mon May 07, 2007 5:33 am

If (1/5)^m (1/4)^18 = 1/(2(10)^35), then m= ?

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Source: Beat The GMAT — Problem Solving | Mon May 07, 2007 5:33 am

Cybermusings: Legendary Member; Posts: 559; Joined: Tue Mar 27, 2007 1:29 amFollowed by: 2 members; Thanked: 5 times

by Cybermusings » Mon May 07, 2007 8:54 am

Is M 35...Can you upload the actual question because I think you might have got the brackets wrong

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kookoo4tofu: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Mon May 07, 2007 5:23 am

by kookoo4tofu » Mon May 07, 2007 8:57 am

sorry about that. im at work right now so i wont be able to upload the question, but yes you are right the answer is 35. could you tell me how you got that answer? thanks.

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jayhawk2001: Community Manager; Posts: 789; Joined: Sun Jan 28, 2007 3:51 pmFollowed by: 1 member; Location: Silicon valley, California; Thanked: 30 times

Re: GMAT Prep: Algebra

by jayhawk2001 » Mon May 07, 2007 5:50 pm

kookoo4tofu wrote:If (1/5)^m (1/4)^18 = 1/(2(10)^35), then m= ?

1/ (2*10^35) = 1/2 * 1/10^35
= 1/2 * (1/2)^35 * (1/5)^35
= (1/2)^36 * (1/5)^35
= (1/4)^18 * (1/5)^35

Hence m = 35

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Cybermusings: Legendary Member; Posts: 559; Joined: Tue Mar 27, 2007 1:29 amFollowed by: 2 members; Thanked: 5 times

by Cybermusings » Tue May 08, 2007 2:57 am

thanks Jay for filling in the explanation!

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