Question

A truck travels at 40 km/h for 3 h and at 35 km/h for 2 h. Find it's average speed??​

Answer 1

Answer:

38 km/h

Step-by-step explanation:

we can know how much it travelled by multiplying 40×3 for the 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