Question

Rosemary left a 15% tip for a meal that cost $39.

What was the amount of the tip?

$2.60

$3.85

$5.40

$5.85

Answer 1

A 15% tip is the fraction $\frac{15}{100}$
Multiply the cost of the meal by the fraction to find the cost of the tip. 
$\frac{15*39}{100}$
After completing the multiplication and division, we have the amount $5.85, which is the solution. 

Therefore the solution is the last on the list, or $5.85.

Answer 2

The answer is 5.85 if you do these steps.

15% tip

39$ for food

15 x 39

Convert 15 into a decimal

0.15 x 39

=5.85

And this works for any percent problems!