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1 mile = 1,160 yards

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1 mile = 1,160 yards

by sanju09 » Fri Mar 18, 2011 2:17 am
How many seconds will it take for a car that is traveling at a constant rate of 45 miles per hour to travel a distance of 22 yards? (1 mile = 1,160 yards)
A. 8
B. 9
C. 10
D. 11
E. 12



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by 6983manish » Fri Mar 18, 2011 2:44 am
sanju09 wrote:How many seconds will it take for a car that is traveling at a constant rate of 45 miles per hour to travel a distance of 22 yards? (1 mile = 1,160 yards)
A. 8
B. 9
C. 10
D. 11
E. 12



https://www.urch.com/forums/gmat-problem-solving
Speed of car = 45 miles/hr
In yards = (45*1160) yards / hr = 52200 yards / hr

In yards/sec = 52200 / (60*60 ) = 52200/3600 = 14.5 yards/sec

Distance traveled = 22 yards
Time taken = 22/14.5 = 1.5 sec ( approx. )

Its not in the options . What am I doing wrong ?
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by sanju09 » Fri Mar 18, 2011 3:00 am
6983manish wrote:
sanju09 wrote:How many seconds will it take for a car that is traveling at a constant rate of 45 miles per hour to travel a distance of 22 yards? (1 mile = 1,160 yards)
A. 8
B. 9
C. 10
D. 11
E. 12



https://www.urch.com/forums/gmat-problem-solving
Speed of car = 45 miles/hr
In yards = (45*1160) yards / hr = 52200 yards / hr

In yards/sec = 52200 / (60*60 ) = 52200/3600 = 14.5 yards/sec

Distance traveled = 22 yards
Time taken = 22/14.5 = 1.5 sec ( approx. )

Its not in the options . What am I doing wrong ?
I can see another conversion error here, in fact 1 mile = 1760 yard.

45 mph = 45 × 1760/3600 yards per second, and time taken to cover 22 yards at this speed

= 22/ (45 × 1760/3600 ) seconds

= 360/ (8 × 45) seconds

= 1 second


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The mind is everything. What you think you become. -Lord Buddha



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by kevincanspain » Fri Mar 18, 2011 12:55 pm
sanju09 wrote:How many seconds will it take for a car that is traveling at a constant rate of 45 miles per hour to travel a distance of 220 yards? (1 mile = 1,760 yards)
A. 8
B. 9
C. 10
D. 11
E. 12



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