0.10i = 18 + 0.30b
3/10 i = 93 + 0.60b
now just solve for i
10% of Ivan's savings was $18 more than 30% of Ben's savings. After Ivan spent 7/10 of his savings and Ben spent 40% of his savings, Ivan had $93 more than Ben. How much was Ivan's saving at first?
1 answer