Question

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

Answer 1

`\begin{gathered} (n)/(15)=(20)/(100) \\ BRING\text{ the 15 to multiplicate on the other side } \\ n=(20\cdot15)/(100) \\ n=3 \end{gathered}`

prove if the statement is correct

`\begin{gathered} (3)/(15)=(1)/(5) \\ (20)/(100)=(1)/(5) \\ (1)/(5)=(1)/(5) \end{gathered}`

n must be equal to 3