Question

A truck travel at 40 km/h for 3 h and returns at 10 km/h. Find it's average speed.

Please explain it

❤Thanks❤​​

Answer 1

Answer:

we can konw how much it travelled by multiplying 40×3 for first 3 hours

40 × 3 = 12040×3=120

it travelled 120 km first

then we can multiply 35 by 2

35 × 2 = 7035×2=70

if travelled 70 km after that

total distance is distance 1 + distance 2

70 + 120 = 190km70+120=190km

total time is time 1 + time 2

3 + 2 = 53+2=5

average speed =

total distance/total time=190/5=38kmph.

Hope this is helpful for you.