BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Exponent Question Help

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 56
Joined: Sat May 24, 2008 5:18 pm
Thanked: 1 times

Exponent Question Help

by anwarma » Tue Jun 10, 2008 6:08 am
Question is

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


ANS --> 35

How the 35 is the answer? What Am I doing wrong in understanding the problem?

I would greatly appreciate the help!
Top
Source: — Problem Solving |
User avatar
Junior | Next Rank: 30 Posts
Posts: 27
Joined: Mon May 26, 2008 9:34 pm
Thanked: 3 times

by VerbalAttack » Tue Jun 10, 2008 6:14 am
hi anwarma,

could you clarify the question again?

is it (1/2)*10^35

or 1/(2 * 10^35)

or 1/(2 * 10)^35.. little confusing

cheers
Top
Senior | Next Rank: 100 Posts
Posts: 56
Joined: Sat May 24, 2008 5:18 pm
Thanked: 1 times

by anwarma » Tue Jun 10, 2008 6:34 am
VerbalAttack wrote:hi anwarma,

could you clarify the question again?

is it (1/2)*10^35

or 1/(2 * 10^35)

or 1/(2 * 10)^35.. little confusing

cheers
OK!

Exact wording is

-->If (1/5)^m multiplied by (1/4)^18 = 1/2(10)^35, then m =

(A) 17

(B) 18

(C) 34

(D) 35 <-- ANSWER

(E) 36
Top
Legendary Member
Posts: 574
Joined: Sun Jun 01, 2008 8:48 am
Location: Bangalore
Thanked: 28 times

by vishubn » Tue Jun 10, 2008 6:50 am
Yes , 35 is the answer

question is simplified to :

--->(1/5^m) * (1/2^36)=1/2(2*5)^35
--->1/(5^m)(2^36)=1/(2^36)(5^35)--- adding powers on right hand side
therefore 5^m=5^35 and m=35


CHeers
Top
Post new topic Post Reply
• Page 1 of 1