[Question]Chris has twelve marbles, and Ryan has twenty-eight marbles. If they put marbles together in a pile and then each takes away 1/4 of marbles from the pile, calculate the number of marbles remaining in the pile.
[Answer]If Chris and Ryan put together their marbles in a pile, the pile will have 12 + 28 = 40 marbles. If they then take 1 / 4 of the marbles each, every person will receive 1 / 4 * 40 = 10 marbles. Both of them will have taken a total of 10 + 10 = 20 marbles. The number of marbles remaining in the pile is 40 - 20 = 20. The answer is 20.
Q: Kohen has a business selling apples. Once a week, he orders 10 boxes of apples to add to his stock. If each box has 300 apples and he sells 3/4 of his stock in a certain week, what total number of apples is not sold?
A: In a week, he orders 10 * 300 = 3000 apples. When 3 / 4 of the stock is sold, the total amount of apples sold becomes 3 / 4 * 3000 = 2250 apples. The amount of apples remaining is 3000 - 2250 = 750 apples. The answer is 750.
Question: The tallest building in the world is 100 feet tall. If the second tallest is half that tall, and the third tallest is half as tall as the second, and the fourth is one-fifth as tall as the third, how tall are all 4 buildings put together?
Answer: If the second tallest building is half as tall as the first one's height of 100 feet, it is 100 / 2 = 50 feet tall. If the third tallest building is half as tall as the second one's height of 50 feet, it is 50 / 2 = 25 feet tall. If the fourth building is one - fifth as tall as the third one, it is 25 / 5 = 5 feet tall. Therefore, all four buildings put together would be 100 + 50 + 25 + 5 = 180 feet tall. The answer is 180.
[Question]Ivan has a piggy bank that can hold 100 pennies and 50 dimes. How much, in dollars, does Ivan have if he has filled his two piggy banks with those coins?
[Answer]Ivan has 50 x 10 = 500 cents from the 50 dimes in his one piggy bank. So, he has a total of 100 + 500 = 600 cents in one of his piggy banks. Since 100 cents is equal to 1 dollar, then Ivan has 600 / 100 = 6 dollars from one of his piggy banks. Therefore, Ivan has a total of $6 x 2 piggy banks = $12 from his two piggy banks. The answer is 12.
Q: Normally Ann can frost a cake in 5 minutes. However, today she has a sprained wrist and it takes her 8 minutes to frost a cake. How much longer would it take her to frost 10 cakes with her sprained wrist?
A: Normally, it would take her 5 * 10 = 50 minutes. With her sprained wrist it will take her 8 * 10 = 80 minutes. 80 - 50 = 30 more minutes. The answer is 30.
Question: Jane runs 3 kilometers in two hours. What is her speed in meters per minute?
Answer:
Since 1 kilometer is equal to 1000 meters, then 3 kilometers is 3 x 1000 = 3000 meters. Since an hour has 60 minutes, then 2 hours is equal to 2 x 60 = 120 minutes. Therefore, her speed is 3000 meters / 120 hours = 25 meters per minute. The answer is 25.