Q: Peter needs 80 ounces of soda for his party. He sees that 8 oz cans cost $.5 each. How much does he spend on soda if he buys the exact number of cans he needs?
A: He needs 10 cans because 80 / 8 = 10. He spends $5 because 10 x .5 = 10. The answer is 5.
Question: There were 140 kids in the junior prom. Of those, a fourth of them were dancers. Of the dancers, 25 danced the slow dance. How many of the dancer students did not slow dance?
Answer: 140 / 4 = 35 of the students were dancers. 35 - 25 = 10 of the dancer students did not slow dance. The answer is 10.
[Question]Nicole has three older sisters. After each one outgrows their clothes, they give them to Nicole. They have all outgrown their clothes and have given them all to Nicole. Nicole started with 10 pieces of clothing. Her first older sister had half as many clothes as Nicole. The next oldest sister had 2 more pieces of clothing than Nicole. The oldest had the average of what her three younger sisters had. How many pieces of clothing does Nicole end up with?
[Answer]The first sister has 5 pieces of clothing because 10 / 2 = 5. The next sister had 12 pieces of clothing because 10 + 2 = 12. The three youngest sisters combined have 27 pieces because 10 + 5 + 12 = 27. The oldest has 9 pieces because 27 / 3 = 9. Nicole ends up with 36 pieces of clothing because 10 + 5 + 12 + 9 = 36. The answer is 36.
Q: Mark and his sister Chris both leave their house for school at the same time. Mark travels at the same speed as Chris, who walks 3 miles per hour. After walking 3 miles Mark has to turn around and go home because he forgot his lunch. If the distance from their house to the school is 9 miles, how much longer does Mark spend walking than Chris?
A: First find the total number of miles Mark walks to get his lunch by multiplying the distance he walks back to the house by 2: 3 miles * 2 = 6 miles. Then find the total distance Mark walks by adding that distance to the distance between the house and the school: 6 miles + 9 miles = 15 miles. Now divide the total distance Mark walks by his speed to find how many hours he spends walking: 15 miles / 3 miles / hour = 5 hours. Now divide the total distance Chris walks by her speed to find the total time she spends walking: 9 miles / 3 miles / hour = 3 hours. Now subtract the time Chris spends walking from the time Mark spends walking to find the difference: 5 hours - 3 hours = 2. The answer is 2.
Question: Hortense loves daisies and sunflowers. She planted 25 daisy seeds and 25 sunflower seeds in her flower bed. If 60% of the daisy seeds germinate, and 80% of the sunflower seeds germinate, and 80% of the resulting plants produce flowers, how many plants will she grow that produce flowers?
Answer: At a germination rate of 60%, 25 seeds will yield 60 / 100 * 25 = 15 plants. At a germination rate of 80%, 25 seeds will yield 80 / 100 * 25 = 20 plants. In total, she will have grown 15 + 20 = 35 plants. If 80% of the plants developed flowers, then she will have grown (80 / 100) * 35 = 28 plants that produce flowers. The answer is 28.
Q: For a school fundraiser, Chandler needs to sell 12 rolls of wrapping paper. So far, he has sold 3 rolls to his grandmother, 4 rolls to his uncle, and 3 rolls to a neighbor. How many more rolls of wrapping paper does Chandler need to sell?
A:
Chandler has sold 3 rolls + 4 rolls + 3 rolls = 10 rolls. Chandler still needs to sell 12 rolls 10 rolls = 2 rolls. The answer is 2.