题目信息
A certain barrel is$$\frac{1}{5} $$full. When k liters of liquid are added to the barrel, it becomes$$\frac{ 2}{3}$$ full. In terms of k, what is the capacity of the barrel, in liters?
A:$$\frac{3}{8}k$$
B:$$\frac{7}{15}k$$
C:$$\frac{15}{7}k$$
D:$$\frac{7}{3}k$$
E:$$\frac{8}{3}k$$
参考答案及共享解析

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已选答案:
正确答案:
C:$$\frac{15}{7}k$$
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题目来源
Magoosh