Question

On morning walk three persons step off together which measure 40 cm 42 cm and 45 CM respectively which is minimum distance each should cover same distance in complete steps

Answer 1

Answer:

2520 cm

Step-by-step explanation:

40=2*2*2*5

42=2*3*7

45=3*3*5

So minimum distance =2*2*2*3*3*5*7=2520 cm

Answer 2

Answer: 2520 cm.

Step-by-step explanation:

Minimum distance will be the least common multiple of the three measure of complete steps.

The measure of complete step is 40, 42 and 45 cm.

40 = 2×2×2×5

42 = 2×3×7

45 = 3×3×5

The least common multiple is 2×2×2×5×3×7×3

=2520 cm.