Math

The ratio of red jelly beans to yellow jelly beans in a dish is 3:4. If Greg eats 3 red jelly beans and 6 yellow ones, the ratio is 4:5. How many yellow jelly beans were originally in the dish?

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  1. r/y = 3/4
    (r-3)/(y-6) = 4/5

    r=27 y=36

    check:
    27/36 = 3/4
    24/30 = 4/5

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  2. The ratio of red jelly beans to yellow jelly beans in a dish is 3:4. If Greg eats 3 red jelly beans and 6 yellow ones, the ratio is 4:5. How many yellow jelly beans were originally in the dish?

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