Question

what should be added to 3 5by8 to get 8 1by2

Answer 1

$\frac{35}{8} + x = \frac{17}{2} \\ \frac{35}{8} + x = \frac{68}{8} \\ x = \frac{33}{8}$

Answer 2

$\textbf{Given Data -}$

$3 \dfrac{5}{8} = \dfrac{29}{8}$

$8 \dfrac{1}{2} = \dfrac{17}{2}$

Let's assume the number as $\textbf{x}$

According to Question,

$\dfrac{29}{8} + x = \dfrac{17}{2} \\ \\ \Longrightarrow x = \dfrac{17}{2} - \dfrac{29}{8} \\ \\ \Longrightarrow x = \dfrac{68 - 29}{8} \\ \\ \Longrightarrow x = \dfrac{39}{8} = 4\dfrac{7}{8}$

Hence, the required number is $\textbf{39/8}$

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