Asked by Anonymous

Robin had 4 times as much money as Shawn at first. After spending some money, Robin realized that Shawn had twice as much as he had. If Robin had $48 at first, how much did Robin have in the end?
Answered by oobleck
at first, r=48, so s=12
so after spending something, Robin only had $6
Answered by Anonymous
Could you show your work?