Question

Each week, Carrie works 40 hours. She spends 15% of her time at the register, 30% of her time greeting customers, and the remainder of the time performing maintenance duties. What percentage of Carrie's time is spent performing maintenance duties?

Answer 1

the answer is 22 hours

Answer 2

First, you would need to create an equation for this problem.
100 - (15% + 30%)

Now, all you have to do is solve it. Remeber, using the order of operations (PEMDAS), you would start in the parenthesis.
100% - (15% + 30%)
100% - 45% = 55%

Carrie spent 55% or 22 hours of her time performing maintenance duties.

I hope this helps!