Question

A car covers 500 km at a speed of 50 kmph and then its speed increase to 60 kmph to cover another 630 km.What is the average speed of the car?

Answer 1

Answer:

hope this helps.

Explanation:

distance covered initially = 500 km

speed initially=50 kmph

time taken(t1)=distance /speed (came from solving speed=distance/time)

t1=500/50

t1=10hr

increased speed=60 km

distance =630

time taken(t2)=distance /speed (came from solving speed=distance/time)

t2=630/60

t2=10.5hr

average speed = total distance travelled/total time taken

avg=500+600/10+10.5

avg=1100/20.5

avg=11000/205

avg=53.6 kmph