Question

Mick has a savings account with $800.00 in it. Every month, he withdraws $75.00 to pay for his cell phone. What is the maximum number of months that Mick can withdraw the money without allowing his savings account to drop below $125.00?

Answer 1

9 months

Explanation:

Let x = number of months with withdrawal

Since he takes out 75 for each month, multiply x by 75 like this: 75x

This is being taken out of the 800, so subtract 800 by 75x

800 - 75x

This has to be equal to 125 since Mick does not want the account to be less than 125

800 - 75x = 125

Let's subtract 800 from both sides

800 - 75x = 125

- 800 - 800

-75x = -675

Then, divide both sides by -75 to isolate the x variable

-75x/-75 = -675/-75

x = 9

The max number of months is equal to 9