Question: Carol spends five hours filling up her pool. During the first hour, the pool fills at a rate of 8 gallons of water per hour. For the next two hours, the pool fills at 10 gallons of water per hour. For the fourth hour, the pool fills at a rate of 14 gallons of water per hour. During the fifth hour, the pool develops a leak and loses 8 gallons of water. At the end of five hours, how many gallons of water are still left in the pool? Think carefully first, then make a decision:
8 gallons of water added during the first hour. 10 gallons of water added during the second hour. 10 gallons of water added during the third hour. 14 gallons of water added during the fourth hour. The total gallons of water added by the fourth hour is 8 + 10 + 10 + 14 = 42. The number of gallons in the pool after losing 8 gallons in the fifth hour is 42 - 8 = 34. So the answer is 34.