Usually you use addition to find a sum.
Question
:
nathan packs 30 boxes in 2 hours.how many boxes can he pack in an 10 hour shift?
30 boxes in 2 hours = 15 box in 1 hour
so
10 * 15 = 150
150 boxes is your answer
You can divide both numbers by 6 to get 2/15 (which cannot be simplified anymore)
2/15 is the simplified form
60,000 is divisible by both 4 and 6