Question

A commuter train travels 55 kilometers in 42 minutes. What is its speed in kilometers per hour?

Answer 1

about 78.57 miles per hour

Explanation:

take 55 kilometers and divide by 42 minutes.

55/42= 1.309

so 1.309 kilometers per minute

then times by 60 minutes to make one hour

1.309×60=78.57