 #1
 27
 6
Homework Statement:

Mr. Mercer wants to drive his Raceabout two miles at an average speed of 50 miles per hour.
1.If he drives the first mile at 25 miles per hour , how much time does he have left to drive the second mile?
2. Can he do it, If so, at what speed?
Relevant Equations:
 Distance = D, rate of speed = r, and time = t, D=rt
I'm pretty lost on this one. I think he needs to drive the second mile at 75 miles per hour to average 50 miles per hour. So he needs to drive the second mile at a rate of 1.5 minutes which would = 75/1.5 = 50
So my answer for 1. 1.5 minutes, and my answer for 2. is Yes, at 75 miles per hour. I'm fairly confident about my answer to 2. but feel very uncertain about the answer to 1.
So my answer for 1. 1.5 minutes, and my answer for 2. is Yes, at 75 miles per hour. I'm fairly confident about my answer to 2. but feel very uncertain about the answer to 1.