Leaving home traveling to work which is 10 miles away drivin

Leaving home traveling to work which is 10 miles away driving at 40 mile per hour how long will it take to get to work?

The basic formula is D=r*t. You are given that D=10 mi and r=40 mph, and time t is the unknown:

10=40t

Divide both sides by 40, and you get t=10/40=1/4 hour. In other words 15 minutes.