Explanation:

To state this problem another way, James must raise 45% of $310.00. Therefore we must find the amount that is 45% of$310.00.

Let's call this amount $j$.

"Percent" or "%" means "out of 100" or "per 100", Therefore 45% can be written as $\frac{45}{100}$.

When dealing with percents the word "of" means "times" or "to multiply".

Putting this altogether we can write this equation and solve for $j$ while keeping the equation balanced:

j = 45/100 xx $310.00 j = ($13950.00)/100

j = \$139.50