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AMC 8
2024 AMC 8 -
21
21
Part of
2024 AMC 8 -
Problems
(1)
an army of frogs
Source: 2024 AMC 8 P21
1/25/2024
A group of frogs (called an army) is living in a tree. A frog turns green when in the shade and yellow when in the sun. Initially the ratio of green to yellow frogs was 3:1. Then 3 green frogs moved to the sunny side and 5 yellow frogs moved to the shady side. Now the ratio is 4:1. What is the difference between the number of green frogs and yellow frogs now?
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<span class='latex-bold'>(A) </span> 10\qquad<span class='latex-bold'>(B) </span> 12\qquad<span class='latex-bold'>(C) </span> 16\qquad<span class='latex-bold'>(D) </span> 20\qquad<span class='latex-bold'>(E) </span> 24
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