Q: An old car can drive 8 miles in one hour. After 5 hours of constant driving, the car needs to get cooled down which takes 1 hour. How many miles can this car drive in 13 hours?
A: In 5 hours the car can drive 8 * 5 = 40 miles. One cycle of driving and pause takes 5 + 1 = 6 hours. In 13 hours this cycle can fit 13 / 6 = 2 full cycles with a remainder of 1 hour. Two cycles will last for 2 * 6 = 12 hours. During two full cycles, the car will drive 40 * 2 = 80 miles. So there is 13 - 12 = 1 remaining hour when the car can drive. That means during 13 hours the car will be able to drive 80 + 8 = 88 miles. The answer is 88.

Q: To make yogurt, the company needs milk and fruit. Milk is bought at $1.5 per liter and fruit at $2 per kilogram. To make one batch of yogurt, the company needs 10 liters of milk, and 3 kilograms of fruit. How much does it cost the firm to produce three batches of yogurt?
A: For the fruits, the company needs to pay 3 * 2 = $6 per batch. 10 liters of milk is a cost of 10 * 1.5 = $15 for the company. So in total one batch is a cost of 15 + 6 = $21. So three batches of yogurt is a cost of 3 * 21 = $63. The answer is 63.

Q: Kay has 14 siblings. Kay is 32 years old. The youngest sibling is 5 less than half Kay's age. The oldest sibling is four times as old as the youngest sibling. How old is the oldest sibling?
A:
Kay 32 years old. Youngest:32 / 2 - 5 = 11 years old. Oldest:11(4) = 44 years old. The answer is 44.