Answer:
2nd one would be 20, 3rd one would be 6, 4th one would be 54, and the last one would be 18. hope that helped !
Explanation:
If a printer is printing 15 papers in 3 minutes, all you have to do is divide 15 by 3, and you get you answer. The answer would be 5 which you would mulitply by the bottom number or divide by the top number.