Question

A person travels from point a to point b in 30hrs and then from point b to point c in 40hrs with same distance. what is his average speed

Answer 1

If x km is distance between a and b (or) b and c then

Average speed = Total distance / Total time
= (x + x) / (30 + 40)
= 2x/70
= x/35 kmph

∴ Average speed of person is x/35 kmph

Answer 2

Answer:

If x km is distance between a and b (or) b and c then

If x km is distance between a and b (or) b and c thenAverage speed = Total distance / Total time

If x km is distance between a and b (or) b and c thenAverage speed = Total distance / Total time= (x + x) / (30 + 40)

If x km is distance between a and b (or) b and c thenAverage speed = Total distance / Total time= (x + x) / (30 + 40)= 2x/70

If x km is distance between a and b (or) b and c thenAverage speed = Total distance / Total time= (x + x) / (30 + 40)= 2x/70= x/35 kmph

If x km is distance between a and b (or) b and c thenAverage speed = Total distance / Total time= (x + x) / (30 + 40)= 2x/70= x/35 kmph∴ Average speed of person is x/35 kmph

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hopes it helps you