Question
If A : B = 7:4 and A is 18 more than B then find the sum of A and
B.
Solution
Let x be the common multiplier. Then, => A : B = 7x : 4x => A = B + 18 => 7x = 4x + 18 => x = 6 A + B = 7x + 4x = 11x = 11 × 6 = 66
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