Q: The garbage truck passes through Daniel's neighborhood on Tuesdays, Thursdays, and Saturdays. In each garbage collection, an average of 200 kg is taken. Due to obstruction in the roads leading to Daniel's neighborhood, the garbage truck stops passing through for two weeks. During the first week, people in Daniel's neighborhood pile the extra garbage around the dumpster, during the second week they apply a policy of cutting their amount of garbage in half. How many kilograms of garbage have accumulated in Daniel's neighborhood during the 2 weeks?
A: The garbage truck passes through Daniel's neighborhood for 3 days. In the first week, 200 * 3 = 600 kilograms of garbage are accumulated. In the second week, half the amount of garbage is accumulated, which is 600 / 2 = 300 kg of garbage. During the 2 weeks, 600 + 300 = 900 kg of garbage are accumulated. The answer is 900.
Question: There are 10 books on the table. Two-fifths of them are reading books and three-tenths of them are math books. There is one fewer science book than math books and the rest are history books. How many history books are there?
Answer: Out of the 10 books, 10 x 2 / 5 = 4 are reading books. While 10 x 3 / 10 = 3 are math books. There are 3 - 1 = 2 science books. So, the total number of reading, math, and science books is 4 + 3 + 2 = 9. Thus, there is only 10 - 9 = 1 history book. The answer is 1.
[Question]Elysse can carry 3 bags of groceries into her home with each trip from the car. Her brother can carry the same amount. How many trips will it take them to carry 30 bags of groceries?
[Answer]Elysse and her brother can carry 3 x 2 = 6 bags of groceries with each trip from the car. Therefore, it will take both of them 30 / 6 = 5 trips. The answer is 5.
Q: Sarah buys 20 pencils on Monday. Then she buys 18 more pencils on Tuesday. On Wednesday she buys triple the number of pencils she did on Tuesday. How many pencils does she have?
A: By adding together Monday and Tuesday, Saah has 20 + 18 = 38 pencils. On Wednesday, she buys 3 * 18 = 54 pencils. All together, Sarah has 38 + 54 = 92 pencils. The answer is 92.
Question: Adonis is playing a prank on his dad by replacing his shampoo with hot sauce. Every day, after his dad showers, Adonis replaces the shampoo with 1/2 an ounce of hot sauce. He knows his dad uses 1 oz of shampoo a day from a new 10 oz bottle that no one else uses. After 4 days, what percentage of the liquid in the bottle is hot sauce?
Answer: Each day, the shampoo bottle goes down 1 / 2 an ounce because 1 - (1 / 2) = 1 / 2. After four days the shampoo bottle is 2 ounces lower because 4 x (1 / 2) = 2. After four days, the shampoo bottle has 8 ounces of liquid left because 10 - 2 = 8. After four days the shampoo bottle has 2 ounces of hot sauce 4 x (1 / 2) = 2. The proportion of hot sauce in the bottle is .25 because 2 / 8 = .25. The percentage of hot sauce is 25% because .25 x 100 = 25. The answer is 25.
Q: Marj has two $20 bills, three $5 bills, and $4.50 in loose coins in her wallet. If she buys a cake that costs $17.50, how much money will be left in her wallet?
A:
Two $20 bills amount to $20 x 2 = $40. Three $5 bills amount to $5 x 3 = $15. So, Marj has $40 + $15 + $4.50 = $59.50 in her wallet. If she buys a cake, she will be left with $59.50 - $17.50 = $42. The answer is 42.