Average speed of a car between points A and B is 20 m/s, between B and – McqOptions

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1.	Average speed of a car between points A and B is 20 m/s, between B and C is 15 m/s, between C and D is 10 m/s. What is the average speed between A and D, if the time taken in the mentioned sections is 20s, 10s and 5s respectively?
A.	17.14 m/s
B.	15 m/s
C.	10 m/s
D.	45 m/s
Answer» B. 15 m/s

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