Question

A truck travels at 40km/h for 3 hour and 35km/h for 2h.Find its average speed​

Answer 1

Answer:

38 km/h

Step-by-step explanation:

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

40 x 3 = 120km

it travelled 120 km first

then we can multiply 35 by 2

35 x 2 =70 km

if travelled 70 km after that

total distance is distance 1 + distance 2

70 + 120 = 190km

total time is time 1 + time 2

3 + 2= 5

average speed =

(total distance divide by total time)

190 divide 5 = 38 km/h