Math, asked by Arjun2084, 7 months ago

A motorist travelled 1/2 of his journey at 60 km/hr and completed the remaining 90 km/hr in 1 1/2 hours. What was his average speed for whole journey?

Answers

Answered by monachelladurai

2

Step-by-step explanation:

distance 'D'

D. D

------ + ------- =. 11/2

2*60 2*90

total distance D=198

avg speed = total distance/total time

avg speed = 198*2/11

avg speed = 36 km/hr

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