Question

A car covers the first half of the distance between
two places at
40 km/h and
another half at 60 km/h.The average speed of the car is
(a)40 km/h
(b) 48 km/h
(c) 50 km/h
(d) 60 km/h
[step by step answer ]​

Answer 1

Answer:

b) 48 km/ h

hope it helps you

Answer 2

Answer:

48 km / hr

Explanation:

let the total distance be s

s/2 distance is covered by 40 km/h speed

tym taken = (s/2)/40=s/80 hr

and s/2 distance is covered by 60km/h speed

tym take= (s/2)/60= s/120 hr

since avg speed =

total distance travelled / total tym taken

= s/{ (s/80)+ (s/120)}

= s/(s/48)

= 48 km /hr.