Question

Calculate a 20% tip on a restaurant bill of $59.65. Show your work.

Answer 1

You want to leave a 20% tip on a meal that cost $59.65.
First, convert the 20% to an actual number that can be used in a calculation. For percents,this is always done by simply dividing the percent (in this case 20%) by 100%.So, the conversational term "20%" becomes 20% / 100% = 0.20 in terms of a real mathematical number.
Second, you need to find out what 20% of your $59.65 meal cost is.This is always done by multiplying 0.20 by $59.65, or

0.20 x $59.65=$11.93.
So, the amount of tip you are going to leave is $11.93.

This makes the total cost of your meal (to write on your charge slip or other payment)

$59.65 + $11.93 = $71.58.

Answer 2

Remember how to calculate a percent of a number?
Multiply the percent by the number.
Change the percent to a decimal by moving the decimal point two places to the left.