Question

Three numbers are in the ratio of 2:3:4 and their LCM are 240. Their HCF is?
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Answer 1

20.

Explanation:

Assign variables. The numbers acan be 2x, 3x and 4x. Then, LCM of 2x, 3x and 4x is 12x

12x = 240

(240/12) = x = 20

The HCF of 2x, 3x, and 4x is 20. (Because x is the highest common factor.)