1.

A Man Covered A Certain Distance At Some Speed. Had He Moved 3 Kmph Faster, He Would Have Taken 40 Minutes Less. If He Had Moved 2 Kmph Slower, He Would Have Taken 40 Minutes More. The Distance (in Km) Is?

Answer»

LET distance = x km and usual rate = y kmph.

Then, x/y - x/(y+3) = 40/60 --> 2y (y+3) = 9X ----- (i)

Also, x/(y-2) - x/y = 40/60 --> y(y-2) = 3x -------- (ii)

On dividing (i) by (ii), we get:

x = 40 km.

Let distance = x km and usual rate = y kmph.

Then, x/y - x/(y+3) = 40/60 --> 2y (y+3) = 9x ----- (i)

Also, x/(y-2) - x/y = 40/60 --> y(y-2) = 3x -------- (ii)

On dividing (i) by (ii), we get:

x = 40 km.


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