Ben and Jerry shared an amount of money in the ratio 4:5. After Ben spent $78, the ratio of Ben's money to Jerry's money became 1:2. How much money did Jerry have?
+37146 b/j = 4/5 or b = 4/5 j
(b-78)/j = 1/2
b - 78 = 1/2 j
4/5 j - 78 = 1/2 j
3/10 j = 78
j = 260
