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 over the distance in complete steps

Answer 1

First boy's step measured=63cm

Second boy's step measured=70cm

Third boy's step measured=77cm

Therefore,the minimum distance will be their L.C.M.

7 []63,70,77

2 []9,10,11

3 []9,5,11

[]3,5,11

L.C.M. of 63,70,77=7*2*3*3*5*11(* means into or multiply)

=6930cm or 6 km 930m

ANS-Minimum distance each should cover so that all can cover the distance in complete steps=6km 930m

Note-You can trust because was top in class in Maths so believe me.

Answer 2

It is the LCM of the foot steps, that is lcm of 63 ,70,77 = 6930 So, minimum they have to cover, to step together= 6930cm....
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