At an auto care shop, 70% of customers get an oil change for their car. Only 45% of customers get an oil change for their car and get their car tires rotated. What is the probability that a customer who gets an oil change for their car also gets their car tires rotated? Round your answer to the nearest tenth of a percent.

31.5%

Step-by-step explanation:

If 70% of customers get an oil change, and 45% of those get their tires rotated, then this is a method I use to find the answers to these types of problems.

70% of customers, 45% of 70

One method that will help you so much is this simple equation: x% of y= y% of x. For example, if you need to find 3% of 50, the same value is given for 50% of 3, which would be 1.5. Using our given digits,45% of 70 is the same as 70% of 45.

A method that can add on to this is one I've come up with myself. If you divide your original number by 100, then multiply it by your given percentage, it will give you your wanted value, so if you plug in your values, 70/100, multiplied by 45, will equal 31.5%.