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

Redeem

Population Problem

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Junior | Next Rank: 30 Posts
Posts: 18
Joined: Sat Apr 25, 2009 5:05 am
Thanked: 1 times

Population Problem

by GMAT12 » Thu May 14, 2009 7:55 am
A certain population of bacteria doubles every 10 minutes. If the number of bacteria in the population was intially was 10^4.What was the number in the population 1 hour later?

A.2(10)^4
B.6(10^4)
C.(2^6)(10^4)
D.(10^6)(10^4)
E.(10^4)^6
Top
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 221
Joined: Wed Jan 21, 2009 10:33 am
Thanked: 12 times
Followed by:1 members

by krisraam » Thu May 14, 2009 8:13 am
C.

Thanks
Raama
Top
Master | Next Rank: 500 Posts
Posts: 322
Joined: Fri Mar 27, 2009 3:56 pm
Thanked: 24 times
GMAT Score:710

by mike22629 » Thu May 14, 2009 8:13 am
First, find out how many times it doubles.

Since it doubles every 10 minutes for an hour, it will double 6 times.

It originally starts at 10^4, which you have to double six times.

so...
(2^6)(10^4)

IMO C.
Top
Junior | Next Rank: 30 Posts
Posts: 18
Joined: Sat Apr 25, 2009 5:05 am
Thanked: 1 times

by GMAT12 » Thu May 14, 2009 8:22 am
Thank you :D
Top
Post new topic Post Reply
• Page 1 of 1