Question

In a morning walk four boys step off together . There steps measure 70cm,65cm,75cm and 80cm respectively. At what distance from starting point will they step off together

Answer 1

We will take out the LCM of 75,60 and 80. The LCM of 70,65 and 80 is 3120cm. Hence the correct answer is 3120cm.

Answer 2

Answer:

First we will take L.C.M of them

The lcm is 2×2×2×2×5×3×5×7×13

= 1,09,200