Question

If we subtract $\frac{1}{2}$ from a number and multiply the result by $\frac{1}{2}$, we get $\frac{3}{8}$. Then the number is ___.

Answer 1

Let number be $y$.

$(y-\frac{1}{2})\times \left(\frac{1}{2}\right)=\left(\frac{3}{8}\right)$

$(y-\frac{1}{2})=\left(\frac{3}{4}\right)$

$y=\frac{3}{4}+\frac{2}{4}=\frac{5}{4}=1.25$