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It takes Carlos 9 minutes to drive from home to work at an average rate of 22 miles per hour. How many minutes will it take Carlos to cycle from home to work along the same route at an average rate of 6 miles per hour?
A. 26
B. 33
C. 36
D. 44
E. 48
OA B
It takes Carlos 9 minutes to drive from home to work at an
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(new rate)/(old rate) = (6 miles per hour)/(22 miles per hour) = 6/22 = 3/11.AAPL wrote:GMAT Prep
It takes Carlos 9 minutes to drive from home to work at an average rate of 22 miles per hour. How many minutes will it take Carlos to cycle from home to work along the same route at an average rate of 6 miles per hour?
A. 26
B. 33
C. 36
D. 44
E. 48
Rate and time have a RECIPROCAL relationship.
Since the new rate is 3/11 of the old rate, the new time must be 11/3 of the old time:
(11/3)(9 minutes) = 33 minutes.
The correct answer is B.
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Converting 9 minutes to 9/60 of an hour, we see that the distance to work is 9/60 x 22 = 3/20 x 22 = 3/10 x 11 = 33/10 miles.AAPL wrote:GMAT Prep
It takes Carlos 9 minutes to drive from home to work at an average rate of 22 miles per hour. How many minutes will it take Carlos to cycle from home to work along the same route at an average rate of 6 miles per hour?
A. 26
B. 33
C. 36
D. 44
E. 48
OA B
Thus, it will take Carlos (33/10)/6 = 33/60 hours, or 33 minutes, to cycle to work,.
Answer: B
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