Question

An airline travels 135 miles in 15 minutes whats its speed in miles per hour

Answer 1

135 miles in 15 minutes....135/15 = 9 miles per minute
1 hr = 60 minutes
so miles per hr would (9 x 60) = 540.....540 miles per hr

Answer 2

It is 540 miles because 15x4 is 60 and that is a full hour so you have to multiply 135x4 which is 540