There are 100 oranges in box a and 80 oranges in box B. how many oranges are taken out of box a and put into Box B? The ratio between box a and Box B is 7:11?

100 - (100 + 80) × 77 + 11, = 100-180 × 718, = 100-70, = 30 (pieces). A: take out 30 oranges from box a and put them in box B. the ratio of box a and Box B is 7:11

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