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Arithmetic

by BTGmoderatorRO » Fri Dec 29, 2017 7:29 am
8,000 dollars are sufficient for a family of 4 members for 40 days. For how many days 15,000 dollars will be sufficient for a family of 5 members?

A. 45 days
B. 54 days
C. 70 days
D. 65 days
E. 60 days

OA is E

what is the best approach to solving this? Pls, I need an Expert contribution on this.Thanks
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by Brent@GMATPrepNow » Fri Dec 29, 2017 7:42 am
Roland2rule wrote:8,000 dollars are sufficient for a family of 4 members for 40 days. For how many days 15,000 dollars will be sufficient for a family of 5 members?

A. 45 days
B. 54 days
C. 70 days
D. 65 days
E. 60 days
GIVEN: 8,000 dollars are sufficient for a family of 4 members for 40 days.
So, 10,000 dollars are sufficient for a family of 5 members for 40 days. [If we increase the money by 25%, then we can feed 25% more people]
And, 15,000 dollars are sufficient for a family of 5 members for 60 days. [If we increase the money by 50%, then that money will last 50% longer]

Answer: E

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Brent
Brent Hanneson - Creator of GMATPrepNow.com
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