Question

A car travels at a speed of 20 km per hour for 2 h and at 60 km per hr for the next two hr. What is the average speed of a car?

no spam answers guys...​

Answer 1

Answer:

20km ×2 = 40km

60km ×2= 120km

total 120+40= 160 km

total time 2+2= 4

average = 160/4= 40km/hr.

Answer 2

1st speed = 20× 2 = 40kmph

2nd speed = 60 × 2 = 120 kmph

avg speed = (40 + 120 )/4 = 40kmph

hope it helps..