Question: A company has a tank that is already filled at a maximum capacity of 350,000 gallons of water. One day the tank starts losing 32,000 gallons/hour for 5 hours, after that time the company repaired the tank but it wasn't enough because the tank was still losing 10,000 gallons/hour. It stayed like that for 10 hours. In the second attempt, they managed to repair the tank and started filling it with 40,000 gallons/hour. After 3 hours, how many gallons are missing for the tank to be at maximum capacity again?
Answer with step-by-step thinking: In the first 5 hours the tank losses 32000 gallons / hour x 5 hours = 160000 gallons. In the next 10 hours the tank losses 10,000 gallons / hour x 10 hours = 100000 gallons. The total amount of water loss so far is 100000 + 160000 = 260000 gallons. The total amount of water remaining in the tank is 350000 - 260000 = 90000 gallons. Once repaired, after 3 hours, the tank gains 40000 gallons / hour x 3 hours = 120000 gallons. The total amount of water in the tank after the tank is filled for 3 hours is 120000 + 90000 = 210000 gallons. The amount of water missing in the tank for it to be full is 350000 - 210000 = 140000 gallons.
So the answer is 140000.


Question: Marissa's sunflower is 21 inches taller than her little sister. If her sister is 4 feet 3 inches tall, how tall is Marissa's sunflower in feet?
Answer with step-by-step thinking: Since 1 foot is equal to 12 inches, then 4 feet is equal to 4 x 12 = 48 inches. So, Marissa's sister is 48 + 3 = 51 inches tall. The sunflower is 51 + 21 = 72 inches tall. Therefore, the sunflower is 72 / 12 = 6 feet tall.
So the answer is 6.


Question: Two sisters go to the movies. Movie tickets are $8 per person. If the sisters brought $25 with them, how much change will they receive after buying the tickets?
Answer with step-by-step thinking:
Movie tickets cost for two people is $8 x 2 = $16. The sisters will receive change of $25 - $16 = $9.
So the answer is 9.