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?
Question
(A) 2520cm
(B) 2525cm
(C) 2555cm
(D) 2528cm
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Class 10 Maths
3 years
2021-12-17T16:24:36+00:00
2021-12-17T16:24:36+00:00 1 Answer
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Answer ( 1 )
Answer: (a)
Explanation: We need to find the
L.C.M of 40, 42 and 45 cm to get the
required minimum distance.
40 = 2×2×2×5
42 = 2×3×7
45 = 3×3×5
L.C.M. = 2×3×5×2×2×3×7 = 2520