Question

What is a number that when you divide it by 2 and subtract 3.8 from the quotient, you get 7?

Answer 1

Let the number x.

Then the number divided by 2 gives

$\frac{x}{2}$

Subtract 3.8 from the quotient gives

$\frac{x}{2}-3.8$

Hence,

$\frac{x}{2}-3.8=7$$\begin{gathered} \frac{x}{2}-3.8=7 \\ \frac{x}{2}=7+3.8=10.8 \\ \Rightarrow x=2\times10.8=21.6 \end{gathered}$

x = 21.6