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 = <<80/4=20>>20 minutes
Then add that time to the time he spends cleaning the outside to find his total cleaning time: 20 minutes + 80 minutes = <<20+80=100>>100 minutes
#### 100