Aron spends 30 minutes/day three times a week vacuuming and 20 minutes/day 2 days a week dusting. How much time does he spend cleaning total each week?
First find the total time Aron spends vacuuming: 30 minutes/day * 3 days/week = <T>multiply(30, 3)=90 minutes/week
Then find the total time Aron spends dusting: 20 minutes/day * 2 days/week = <T>multiply(20, 2)=40 minutes/week
Then add those two times to find Aron's total cleaning time per week: 90 minutes/week + 40 minutes/week = <T>add(90, 40)=130 minutes/week
