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Stefan drove to work in rush hour traffic, going just 25 miles in 1 hour and 8 minutes. Later that day, he left work early to avoid the rush and was able to take the same route home in 32 minutes. What was Stefan's average speed overall?

Sagot :

The average speed of stefan is 0.57 miles per hour.

Given, In heavy traffic, Stefan covered just 25 miles in 1 hour and 8 minutes on his way to work.

He left work early to beat the rush hour and made it home in 32 minutes using the same route.

speed of steven in heavy traffic = distance/ time

distance = 25 miles

time = 1 hour and 8 minutes = 68 minutes

therefore, speed = 25/68 = 0.36 miles per hour.

speed of steven while returning back to home.

distance = 25 miles

time = 32 minutes.

speed = 25/32 = 0.78 miles per hour.

average speed = 0.36 ₊ 0.78/2

= 1.14/2

= 0.57 miles per hour.

hence we get the average speed as 0.57 miles.

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