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

Answer:

$120 \frac{4}{5}$ or 120.8 miles per hour

Step-by-step explanation:

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

$90 \frac{3}{5} = \frac{90\times 5 + 3}{5} = \frac{453}{5}$

Average speed

= distance/time

= $\frac{\frac{453}{5}}{\frac{3}{4}}$miles per hour

= $\frac{453}{5} \times \frac{4}{3}$ miles per hour

= $\frac{604}{5}$ miles per hour

= $120 \frac{4}{5}$ miles per hour or 120.8 miles per hour