Three numbers are in the ratio 3:4:5 and their L.C.M is 2400. Their H.C.F is? Select the correct option.
A) 40 B) 99 C) 88 D) 44 E) 11
Let the numbers be 3x, 4x and 5x.   Then, their L.C.M = 60x. So, 60x = 2400 or x = 40.   The numbers are (3 * 40), (4 * 40) and (5 * 40).   Hence, required H.C.F = 40.   40nswer: 40
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Three numbers are in the ratio 3:4:5 and their L.C.M is 2400. Their H.C.F is?