Question 162348: Carlos had a bag of gum drops. He gave 1/4 of them to Monica, then gave half of what was left to Michael, then gave 1/6 of what was left to Ingrid. He then had 20 gumdrops left. How many did he have originally?
I wasn't sure what topic this would go under, so i just clicked one that said fractions. I was thinking that i would try to work backward, but i just don't understand how. Answer by scott8148(6628) (Show Source):