Matt spends 80 minutes washing the outside of his car and 1/4 that amount of time cleaning the inside. How long does he spend cleaning his car total?
First find the time Matt spends cleaning the inside of his car: 80 minutes / 4 = <T>divide(80, 4)=20.0 minutes
Then add that time to the time he spends cleaning the outside to find his total cleaning time: 20 minutes + 80 minutes = <T>add(20, 80)=100 minutes
