[tex]8 = \frac{8}{1} \\ \\ two-fifths = \frac{2}{5} \\ \\ \\ Reverse: \frac{2}{5} to \frac{5}{2} \\ \\ \\ \\ Now, \frac{8}{1} ( \frac{5}{2} ) \\ \\ \frac{8(5)}{1(2)} = \frac{40}{2 } \\ \frac{40}{2} = 20 \\ \\ Answer: 20 [/tex]
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