Question

A car travel 2o km in 1hrs and 4o km in 3 hr what is average speed

Answer 1

average speed= (40+20)/(3+1)= 15km/hr

Answer 2

hey

total distance = 20+40 =60 km
total time = 1+3 =4 hour

then,
average speed = total distance covered/total time taken
= 60/4
= 15 km/hour