Aside: 2 hours and 40 minutes = 2 2/3 hoursklaud wrote:Martha biked 18 2/3 miles in 2 hours and 40 minutes. What was her average rate of speed in miles per hour?
A)7
B)7 2/3
C)8 1/3
D)9
E)9 1/3
Average rate = (total distance)/(total time)
= (18 2/3)/(2 2/3)
= (56/3)/(8/3)
= (56/3)(3/8)
= 7 = A
Cheers,
Brent
