Question

Jason can travel 21/4 miles in 1/2 an hour what is average speed in miles per hour

Answer 1

We know that the speed has units of distans over the time so the speed (S) will be:

`S=((21)/(4))/((1)/(2))`

and simplify this:

`S=(42)/(4)=(21)/(4)`

so the speed is 21/4 miles per hour