Question

A man completes 30 km of a journey at 6 km/h
6
and the remaining 40 km in 5 h. His average speed
for whole journey is
4
(a) 6- km/h
11
(b) 7 km/h
(c) 7-km/h
2
(d) 8 km/h​

Answer 1

Answer:

(b) 7 km/h

Explanation:

30/6=5 hour

70/10=7 km/hour