Answers

2016-04-05T14:02:49+05:30
In this case, the minimum distance required is the l.c.m(40,42,45).

40=2³ * 5
42=2 * 3 * 7
45=3² * 5

∴l.c.m(40,42,45) = 2³ * 3² * 5 * 7
                           = 8 * 9 * 35
                           = 72 * 35
                           = 2520 cm
                           = 25.20 m

Thus, the three persons should travel a minimum distance of 2520 cm so as to cover the distance in complete steps.
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