three numbers are in the ratio of 3 4 5 and their l c m is 3600 their hcf is | Examsbook

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Q: Three numbers are in the ratio of 3:4:5 and their L.C.M is 3600.Their HCF is:

1
40
2
60
3
100
4
120

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Answer : 2. "60"
Explanation :
Answer: B) 60 Explanation: Let the numbers be 3x, 4x, 5x. Then, their L.C.M = 60x. So, 60x=3600 or x=60. Therefore, The numbers are (3 x 60), (4 x 60), (5 x 60). Hence,required H.C.F=60

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