Question: Jennifer will be 30 years old in ten years. At that time, her sister Jordana will be three times as old Jennifer. How old is Jennifer's sister now?
Answer: When Jennifer is 30 years old in ten years, her sister Jordana will be 3 * 30 = 90 years old. She's currently 10 years younger, so she's 90 - 10 = 80 years old. The answer is 80.
[Question]Mrs. Choi purchased a house for $80000. Five years later, she sold it for a 20% profit and got a 5% broker's commission from the original price. How much did the house sell for?
[Answer]The 20% profit amounts to $80 000 x 20 / 100 = $16 000. The 5% commission amounts to $80 000 x 5 / 100 = $4 000. So the selling price is $80 000 + $16 000 + $4 000 = $100 000. The answer is 100000.
Q: The Giants baseball team is trying to make their league playoff. They have played 20 games and won 12 of them. To make the playoffs, they need to win 2/3 of their games over the season. If there are 10 games left, how many do they have to win to make the playoffs?
A: There are 30 games total because 20 + 10 = 30. They need to win 20 games because 30 x (2 / 3) = 20. The need to win 8 more games because 20 - 12 = 8. The answer is 8.
Question: John reels in 3 crab baskets a week. Each basket holds 4 crabs. He collects crabs twice a week. Each crab sells for $3. How much money does he make?
Answer: He collects 3 * 4 = 12 crabs each time. He thus collects 12 * 2 = 24 crabs a week. So he makes 24 * 3 = $72 a week. The answer is 72.
[Question]A swimming pool is being emptied through a drain at the bottom of the pool and filled by a hose at the top. The drain can empty the pool in 4 hours and the hose can fill the pool in 6 hours. The pool holds 120 liters of water. If the pool starts filled with water, how much water will be left after 3 hours?
[Answer]It takes the drain 4 hours to empty the pool, so it drains at a rate of 120 liters / 4 hours = 30 liters / hour. After 3 hours, the drain will have removed 3 * 30 = 90 liters of water from the pool. It takes the hose 6 hours to fill the pool, so it fills at a rate of 120 liters / 6 hours = 20 liters / hour. After 3 hours, the hose will have added 3 * 20 = 60 liters of water to the pool. After 3 hours, there will be 120 liters + 60 liters – 90 liters = 90 liters of water left in the pool. The answer is 90.
[Question]On Tuesday, a fruit vendor sold 2.5 dozen lemons and 5 dozens avocados. What is the total number of fruits that the fruit vendor sold?
[Answer]
Since 1 dozen is equal to 12, then the vendor sold 2.5 x 12 = 30 lemons. While he sold 5 x 12 = 60 avocados. So, the fruit vendor sold a total of 30 + 60 = 90 fruits. The answer is 90.