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Ben ran a 19.5-mile race last Saturday. His average speed during the race was 7.8 miles per hour. How long did it take Ben to finish the race?

1 Answer

Jun 5, 2017

$2.5 hours = 2 hours 30 minutes$ $2.5" hours "=2" hours " 30 "minutes"$

Explanation:

$Time = \frac{distance}{average speed}$ $"Time "="distance"/"average speed"$

$\times \times x = \frac{19.5}{7.8}$ $color(white)(xxxxx)=19.5/7.8$

$\times \times x = 2.5$ $color(white)(xxxxx)=2.5$

$\Rightarrow time taken = 2.5 hours = 2 hours 30 minutes$ $rArr"time taken " =2.5" hours" =2" hours " 30" minutes"$

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