Question

If a car travels the first one third of its destination with a uniform speed 10 km/h, second
one third of its destination with a uniform speed 30 km/h and the remaining part at an
uniform speed 5 km/h, what is its average speed ?
(A) 22.5 m/h
(B) 9 km/h
(C) 18 km/h
(D) 15 km/h​

Answer 1

Answer:

15km/h

Explanation:

add 10,30and5 and then divide by 3

Answer 2

Answer:

Mostly it should be answer (D)...that's 15km/h