Q: Andrew bought a big bag of balloons. The bag had 303 blue balloons and 453 purple balloons. If Andrew shares half of his balloons with his brother, how many balloons does he have left?
A: There are 303 + 453 = 756 balloons in the bag. Once Andrew gives half of his balloons to his brother he has 756 / 2 = 378 balloons left. The answer is 378.
Question: Helga works for a newspaper company. She can write 5 articles every 30 minutes, and she usually works 4 hours a day 5 days a week. If Helga worked an extra 2 hours last Thursday, and an extra 3 hours last Friday, how many articles was she able to write this week?
Answer: Helga writes 5 x 2 = 10 articles per hour. And she can write 10 x 4 = 40 articles every 4 hours. So, the total number of articles she usually writes for a week is 40 x 5 = 200 articles. She was able to write 10 x 2 = 20 articles on her extra 2 hours last Thursday. And she was able to write 10 x 3 = 30 articles on her extra hour last Friday. So, the total number of articles she was able to write on her extra hours is 20 + 30 = 50. Therefore, she was able to write a total of 200 + 50 = 250 this week. The answer is 250.
[Question]It takes 10 minutes to wash a car, 15 minutes to change oil, and 30 minutes to change a set of tires. If mike washes 9 cars, changes the oil on 6 cars, and changes two sets of tires how many hours did he work?
[Answer]He spent 10 minutes * 9 cars = 90 minutes washing cars. He spent another 15 minutes * 6 cars = 90 minutes changing oil. He spent 2 cars * 30 minutes = 60 minutes changing tires. He spent 90 minutes + 90 minutes + 60 minutes = 240 minutes working. He spent 240 minutes / 60 minutes = 4 hours working. The answer is 4.
Q: If the number of dogs in the neighborhood was originally half the number of cats in the neighborhood before twenty new dogs were born, and now there are twice as many dogs as cats, how many cats were in the neighborhood, to begin with, if there are 20 cats now?
A: Now there are twice as many dogs as cats, and if the number of cats is 20, there are 2 * 20 = 40 dogs. Before twenty new ones were born, the number of dogs in the neighborhood originally was 40 - 20 = 20. If the number of dogs in the neighborhood was originally half the number of cats in the neighborhood, there were 20 * 2 = 40 cats in the neighborhood. The answer is 40.
Question: Isabella and Alexis went to the mall to buy some pants and dresses. Alexis bought 3 times more pants and dresses than Isabella. If Alexis bought 21 pairs of pants and 18 dresses, how many pairs of pants and dresses did Isabella buy in total?
Answer: The number of pants Isabella bought is 21 / 3 = 7 pairs of pants. The number of dresses Isabella bought is 18 / 3 = 6 dresses. The total number of pants and dresses Isabella bought is 7 + 6 = 13. The answer is 13.
Q: A typical tournament of tennis has 4 rounds. There are 8 games in the first round, 4 in the second round, 2 in the third round and 1 during the finals. If each game requires new tennis balls, and on average each game uses 5 cans of tennis balls, how many tennis balls in total are used at the end of the tournament if each can has 3 tennis balls?
A:
There are a total of 8 + 4 + 2 + 1 = 15 games of tennis in a typical tournament. If 1 game uses 5 cans of tennis balls, then 15 games would use 15 * 5 = 75 cans of tennis balls. If 1 can of tennis balls has 3 balls, then 75 cans would have 225 balls. The answer is 225.