Question
If the ratio of A to B is 6:11, and the expression (8B -
3A) equals to 210, find the value of (3A + 2B).Solution
Let 'A' = '6x' So, B = 6x X (11/6) = '11x' According to question; 8 X 11x - 3 X 6x = 210 Or, 88x - 18x = 210 Or, 70x = 210 So, x = 3 So, A = 6x = 3 X 6 = 18 And, B = 11x = 11 X 3 = 33 So, required value = 18 X 3 + 33 X 2 = 54 + 66 = 120
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