# 10 is 20% of what number?

##### 1 Answer
Dec 31, 2016

If we know that 10harr20% then what harr100%

#### Explanation:

10harr20%=Xharr100%, or:

10/(20%)=X/(100%)

You may multiply the left part by $1$, disguised as $\frac{5}{5}$:

(5xx10)/(5xx20%)=X/(100%)->50/(100%)=X/(100%)->X=50