Question

n 20--- = -----15 100for the following proportion find the unknown number nn=

Answer 1

$\begin{gathered} \frac{n}{15}=\frac{20}{100} \\ BRING\text{ the 15 to multiplicate on the other side } \\ n=\frac{20\cdot15}{100} \\ n=3 \end{gathered}$

prove if the statement is correct

$\begin{gathered} \frac{3}{15}=\frac{1}{5} \\ \frac{20}{100}=\frac{1}{5} \\ \frac{1}{5}=\frac{1}{5} \end{gathered}$

n must be equal to 3