A certain Internet service provider charges a base fee of $5.95 per month. Use in excess of 10 hours per month is charged by the minute at a rate of $0.75 per hour. If Sarah can spend at most $9.50 per month on Internet service, then to the nearest minute, what is the maximum amount of time that she can use per month if she subscribes to this Internet service provider?
A. 12 hr 36 min
B. 12 hr 40 min
C. 14 hr 35 min
D. 14 hr 44 min
E. 15 hr 28 min
A certain Internet service provider
This topic has expert replies

 Junior  Next Rank: 30 Posts
 Posts: 15
 Joined: 24 Nov 2012
 Followed by:1 members
GMAT/MBA Expert
 Anurag@Gurome
 GMAT Instructor
 Posts: 3835
 Joined: 02 Apr 2010
 Location: Milpitas, CA
 Thanked: 1854 times
 Followed by:523 members
 GMAT Score:770
$0.75 per hour = $0.75/60 per minutesaxenarahul021 wrote:A certain Internet service provider charges a base fee of $5.95 per month. Use in excess of 10 hours per month is charged by the minute at a rate of $0.75 per hour. If Sarah can spend at most $9.50 per month on Internet service, then to the nearest minute, what is the maximum amount of time that she can use per month if she subscribes to this Internet service provider?
For first ten hours she has to pay $5.95
The excess of $(9.50  5.95) = $3.55 she will pay at the rate of $0.75/60 per minute
So, the extra usage she will get = 3.55*60/0.75 minutes = 355*60/75 minutes = 355*4/5 minutes = 71*4 minutes = 284 minutes = 4 hours 44 minutes
Hence, she can use (10 hours + 4 hours 44 minutes) = 14 hours 44 minutes
The correct answer is D.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
18005664043 (USA)
Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
18005664043 (USA)
Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/