1. Joe’s Clothes sold 12 green jackets on Friday. The store sold twice as many black jackets as green ones. How many jackets were sold altogether?
2. Danny had some money when he entered Great Buy. After buying 7 identical robots costing $4 each, Danny had $13 left. How much money did Danny have at first?
G = 12 = 2B, so B=6
x - 7*4 = 13