How many MPH is this?

Question

If i go one eighth of a mile in 19.3 seconds how many MPH would I be going

Answer 1

one eighth of a mile in 19.3 seconds

= 1/(8 * 19.3) miles in a second

= 3600/(8 * 19.3) miles in an hour.

Answer 2

You would go 1 mile in 8 x 19.3 sec = 154.4 sec

One hour = 3600 sec

In one hour, there are 3600/154.4 =  2.331 periods in which you will travel one mile. Your MPH is two and one third ( 2 1/3 MPH)