Question

A person covered a distance from P to Q at a speed of 40 kmph. On the return journey, he covered three-fifths of the distance in two-third of the time he took to cover from P to Q. At what speed should he travel to complete the remaining journey from Q to P, in the remaining time?​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

let us suppose he took time t to reach from P to Q

his speed was 40 kmph

so distance PQ is (40 × t )km

now distance covered by him is 3/5 of 40 × t

so remaing distance is (1 - 3/5)×40t = 2/5 × 40t =16t km

remaining time is t - 2t/3 = 1t/3 hrs

so speed for remaining distance is = remaining distance ÷ remaining time = 16t ÷ 1t/3 = 48 kmph

so 48 kmph is ur right answer