Question

If lunch cost $15.70, before tip, and you left $3.14, what %

tip did you leave and what was the total cost of lunch?

Answer 1

20%

$18.84

Explanation:

3.14 is what percent of 15.70?

Use the percent-to-dollar conversion (100: 15.70) :

3.14 * 100% / 15.70 =

3.14 / 15.70 * 100% =

1/5 * 100% =

100% / 5 = 20% ==> percent tip

$15.70 + $3.14 = $18.84 ==> Total cost