maths queotion class 10 th chapter 1 real no.on morning walk three person step off together. and their step measure 40cm, 42cm and 45cm respectively what is the minimum distanceeach should walk so that each can cover the same distance in complete steps
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We have to find the Lcm of the given numbers.
The minimum distance that they all three should walk will be the L.C.M. of 40, 42, 45.
40=2×2×2×5
42=2×3×7
45=3×3×5
Hence L.C.M. of 40, 42 and 45 = 2×2×2×3×3×5×7= 2520cm = 25.20m
minimum distance each should walk so that each cover the distance is 25.20m
The minimum distance that they all three should walk will be the L.C.M. of 40, 42, 45.
40=2×2×2×5
42=2×3×7
45=3×3×5
Hence L.C.M. of 40, 42 and 45 = 2×2×2×3×3×5×7= 2520cm = 25.20m
minimum distance each should walk so that each cover the distance is 25.20m
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