A convenience store sells 180 gallons of soda a week. They buy syrup boxes that can make 30 gallons of soda, and each box costs $40. How much do they pay for syrup a week? Think carefully first, then make a decision:
They need to buy 180 / 30 = 6 boxes. So the cost is 6 * 40 = $240. So, the answer is 240.