Question

One morning walk three person steps measure 40 cm,42cm,45cm. what is minimum distance each should walk so that each cover the distance

Answer 1

Lcm of 40,42,45 cm is 2520 cm.

Answer 2

We have to find a Lcm of the given numbers.

The minimum distance that they all three should walk will be the L.C.M. of 40, 42, 45.

 40=2×2×2×5

 42=2×3×7

 45=3×3×5

Hence L.C.M. of 40, 42 and 45 = 2×2×2×3×3×5×7= 2520cm = 25.20m

minimum distance each should walk so that each cover the distance is 25.20m