Question

An emergency vehicle travels 10 miles at a speed of 50 miles per hour.How fast must the vehicle travel on the return trip if the round-trip travel time is to be 20 minutes?​

Answer 1

Distance = 10 miles (Given)

Speed = 50 miles per hour (Given)

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STEP 1: Find time taken for to reach destination:

Time taken = Distance ÷ Speed

Time taken = 10 ÷ 50 = 1/5 hour

1/5 hour = 1/5 x 60 = 12 mins

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STEP 2: Find time remaining for the returned trip

Total time = 20 mins

Time for returned trip = 20 - 12 = 8 min

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STEP 3: Find speed needed for the returned trip:

8 mins = 8/60 = 2/15 hour

Speed = Distance ÷ Time

Speed = 10 ÷ 2/15

Speed = 10 x 15/2

Speed = 150/2

Speed = 75 miles per hour

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Answer: 75 miles per hour

Answer 2

Answer:

so answer will be 75......