1.

By what rational number should\[3\frac{4}{5}\]be multiplied, to get \[20\frac{4}{15}?\]

A.  \[1\frac{1}{2}\]                     
B.       \[5\frac{1}{3}\]                     
C.  \[2\frac{1}{4}\]                     
D.      \[3\frac{1}{5}\]
Answer» C.  \[2\frac{1}{4}\]                     


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