Question

James walks every day at the same rate of speed. On Monday, he walked 3.5 miles in in half an hour Tuesday it took him 4 hours to walk 28 miles. On Friday, James walked 56 miles in 8 hours. What is James constant rate of speed?

Answer 1

The speed is defined as the ratio between the distance you cover and the time it takes you to cover that distance.

So, in this case, we have

$s = \dfrac{3.5}{0.5} = \dfrac{28}{4} = \dfrac{56}{8} = 7\text{ mph}$

Answer 2

to find james’ constant rate of speed, you can divide miles by hours (m/h)

28 miles / 4 hours = 7

56 miles / 8 hours = 7

3.5 is half of 7, so we know that’s true as well

this means james’ constant rate of speed would be 7 mph