Question

A bicyclist travels the first 1600 m of a trip at an average speed of 8 m/s, travels the next 1200 m in 90 s and spends the last 50 s at a speed of 15 m/s. Find the average speed of the bicyclist for this trip.

a. 10.44m/s
b. 15 m/s
c. 30 m/s
d. none of the above

Answer 1

Answer:

The answer is D , none of the above

Explanation:

1600÷8=200s 1200÷90=13.33s 50÷15= 3.33s (1600+1200+50)/(200+13.33+3.33) = 13.15m/s