Question

A train travels 90 3/5 miles in 3/4 of an hour. What is the average speed, in miles per hour, of the train? I also have to show my work please help

Answer 1

`120 (4)/(5)` or 120.8 miles per hour

Explanation:

We first convert the distance into an improper fraction to facilitate calculation.

`90 (3)/(5) = (90* 5 + 3)/(5) = (453)/(5)`

Average speed

= distance/time

=
`((453)/(5))/((3)/(4))`miles per hour

=
`(453)/(5) * (4)/(3)` miles per hour

=
`(604)/(5)` miles per hour

=
`120 (4)/(5)` miles per hour or 120.8 miles per hour