on a morning walk 3 persons step off together and their steps measure 40 cm , 42 cm and 45 - Maths - Real Numbers

Question

on a morning walk 3 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

Shridhar Kaushik · Accepted Answer

The minimum distance that they all three should walk will be the
L C M of 40, 42, 45
Since 40=2Ã—2Ã—2Ã—5
42=2Ã—3Ã—7
45=3Ã—3Ã—5
âˆ´ L C M of 40, 42 and 45 =
2Ã—2Ã—2Ã—3Ã—3Ã—5Ã—7=
2520cm = 25 20m

on a morning walk 3 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