Question

Khairul travels by car at an average speed of 70 kmh and completes his journey in 54 minutes. On his return journey, he travels at an average speed of 45 km/h.

(a)How long does the return journey take?

(b) If he begins his starting journey at 09 55 and rests for 40 minutes before making his return journey at what time does he arrive at the initial starting point?​

Answer 1

WHILE GOING :-

Average speed - 70km/h

Time taken - 54 minutes

Distance covered - x metre

WHILE RETURNING :-

Average speed - 45 km/h

Time taken - y minutes

Distance covered - x metre

a) Total time of the whole journey - time taken while returning+time taken while going