Question

A car covers 100 km distance in 1 hour along the main road and 20 km distance in 1/2 hours along the side road. what is the average speed of car for whole journey?
a) 60
b)80
c) 70
d) 100
kindly give answer with solution?
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Answer 1

Answer:

A car covers distance in 1 hour along the main road=100 km

distance in 1/2 hours along the side road=20km

$100 - 20 = 80$

Ans = 80 avearge speed of car for whole journey