Question

On a morning walk, three persons step off
together and their steps measure 40 cm, 42 cm
and 45 cm, respectively. What is the minimum
distance each should walk so that each can
cover the same distance in complete steps? *
​

Answer 1

Step-by-step explanation:

The minimum distance covered by each of them in complete steps=LCM of measure of their steps

=LCM(40,42,45)

40=2*2*2*5=2 power 3*5

42=2*3*7

45=3*3*5

=3power2*5

LCM(40,42,45)=2power3*3power2*5*7

=2520cm