The product of a number and three is 7.5 what is the number first right and a question to describe the situation.

Reading the question, we can find the followed expression, where X is the number that we want to find:
[tex]3x=7.5[/tex]Now, we can divide both sides by 3 to find our number x:
[tex]\frac{3}{3}x=\frac{7.5}{3}\rightarrow x=2.5[/tex]So our number x is 2.5