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A B Number of balls 3 : 4 Let bag A have 3x balls and bag B have 4x balls Now 7 balls are taken out of bag ‘B’ and put in bag ‘A’ (3x+7)/(4x-7) = 1/1 3x+7=4x-7 x = 14 Bag A = 3 × 14 + 7 = 49 Bag B = 4 × 14 – 7 = 49
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