Question

Three boys step off together from the same spot. Their steps measure 63 cm,70 cm and 77 cm respectively. What is the minimum distance each should cover so that all can cover the same distance in complete steps? (With full statement )

Answer 1

step measure of 1st boy =63cm
step measure of 2nd boy = 70cm
step measure of 3rd boy= 77cm

L.C.M.= 2×3×3×5×7×11 = 6930

Hence, the minimum distance each should cover so that all can cover the distance in complete steps is 6930 cm.

Answer 2

For finding minimum distance, we have to find L.C.M of 63, 70, 77.

L.C.M. of 63, 70 and 77 = 7 x 9 x 10 x 11 = 6930 cm.

Therefore, the minimum distance is 6930 cm

this answer is absolutly correct.
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