The only money that Lance and Melissa had on them was in $5 notes. They were at a grage sale and decided to buy a used stereo system. Lance needed $10 more to pay for the system, and melissa needed $70 more. When they added their money, they were still unable to afford the system. How much did the system cost? Solution they had 5 lance needed 10 more so all together there they need 15 Melissa needed 70 more the system costs $85.