TOM traveled the entire 60 miles trip. If he did the first 15 miles of at a constant rate 24 miles per hour and the remaining trip of at a constant rate 45 miles per hour, what is the his average speed, in miles per hour?
Answers:	A) 35.62mph	B) 25.45mph	C) 34.52mph	D) 36.92mph	E) 36.29mph
avg speed = total distance/ total time = (d1+d2)/(t1+t2) = (15+45) / ((15/24)+(45/45)) = 60*2/3 = 36.92mph   36.92mph
<result>D</result>
TOM traveled the entire 60 miles trip. If he did the first 15 miles of at a constant rate 24 miles per hour and the remaining trip of at a constant rate 45 miles per hour, what is the his average speed, in miles per hour?