选择题
2024 AMC 8 Problem 21: Frog Ratios
A group of frogs (called an army) is living in a tree. A frog turns green when in the shade and turns 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 the number of yellow frogs now?
2024 AMC 8 第21题：青蛙比率
一群青蛙（称为军队）住在一棵树上。青蛙在阴凉处会变成绿色，在阳光下会变成黄色。最初，绿色和黄色青蛙的比例为3：1。然后3只绿色青蛙移动到向阳面，5只黄色青蛙移动到阴面。现在比例是 4 : 1。现在绿色青蛙的数量和黄色青蛙的数量有什么区别
A.
10
B.
12
C.
16
D.
20
E.
24