Question

Three boys step off together from the same place. If their step measure 36 cm ,48cm,54 cm,
at what distance from the starting point will they again step together​

Answer 1

Step-by-step explanation:

The least distance from the starting point where they will step together will be given by the LCM of 36, 48, and 54. ∴ They will step together again at a distance of 432 cm from the starting point.

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Answer 2

If all three of them are walking at the same speed, then their feet will match at a distance which is the the lowest common multiple (LCM) of 30 , 36 and 48 cm.

30=2×3×5

36=22×32

48=24×3

The LCM of the three numbers is

24×32×5=720

So they will step off together again at a distance of 720 cm.