Given the word problem, we can deduce the following information:
1. 3/5 of a number is 18.
To determine the number, we let x be the number and multiply it with 3/5. It is shown below:
[tex]x(\frac{3}{5})[/tex]
Then, to complete the equation, it would be like this:
[tex]x(\frac{3}{5})=18[/tex]
We simplify the equation:
[tex]\begin{gathered} x(\frac{3}{5})=18 \\ x=\frac{18(5)}{3} \\ \text{Calculate} \\ x=30 \end{gathered}[/tex]
Therefore, the number is 30.
