Given a: B: C = 2:3:4, a + B + C = 27, find the value of a-2b-2c This is how I solve this problem, because the sum of three numbers is 27 and the total score is 9, so finding a is 27 times 2 / 9 Let a / 2 = B / 3 = C / 4 = K. how did this change?

He assumed that the unit one is k, and expressed by a, B and C. K is that formula, but your method seems to be more simple. Mathematics is simple

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