Question

Ben drives from town A to town B. He drives 2/5 of the journey at 40 km/h and covers the remaining 180 km in 3 hours. (a) What is the distance between town A and town B? (b) What is Ben’s average speed for the journey? Type your answers (without commas) as: (a)_______units (b)______units​

Answer 1

Step-by-step explanation:

let total distance be x

2x/5 km in 40km/hr

remaining= x-2x/5=3x/5

3x/5=180

x=180×5/3=300km

2x/5 in 40km/hr

2×300/5=120km

t=s/v=120/40=3hr

average speed = total distance /total time

=120+180/3+3=300/6=50km/hr