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If 30 % of (B-A)= 18 % of (B+A), then the ratio A: B is equal to

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If 30 % of (B-A)= 18 % of (B+A), then the ratio A: B is equal to (a) 4:1 (b) 1:4 (c) 5:4 (d) 5:9 Watch Full Video Solution