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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?
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A.$$(\frac{3}{8})k$$
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B.$$(\frac{7}{15})k$$
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C.$$(\frac{15}{7})k$$
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D.$$(\frac{7}{3})k$$
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E.$$(\frac{8}{3})k$$
C显示答案
