Q: John decides to learn how to play the piano. He buys a piano for $500. He then hires a teacher for 20 lessons at $40 per lesson but ends up getting a 25% discount. How much did everything cost?
A: The normal price of the lessons would be 20 * 40 = $800. The discount saves him 800 * .25 = $200. So the lessons cost him 800 - 200 = $600. That means everything costs 500 + 600 = $1100. The answer is 1100.
Question: Josh has some money. He spent $1.75 on a drink, and then spent another $1.25. If he had $6 left, how much money, in dollars, did Josh have at first?
Answer: Josh spent 1.75 + 1.25 = 3 dollars in total. Josh had 6 + 3 = 9 dollars at first. The answer is 9.
[Question]Martin is organizing a party, and he invited many of his colleagues. He invited 5 people from his hometown and twice as many people from his school. Martin invited also as many people from his sports club as the sum of people invited from his hometown and his school. The remaining invitations represent 20% of the total previously mentioned. How many people can potentially come to the party Martin is organizing?
[Answer]Martin invited 5 * 2 = 10 people from his school. People from the sports club got 5 + 10 = 15 invitations. So in total from the sports club, hometown and school, Martin invited 5 + 10 + 15 = 30 people. All other invitations are 20% of the previous total, which means 20 / 100 * 30 = 6. That means Martin invited to his party 30 + 6 = 36 people. The answer is 36.
Q: Federal guidelines recommend eating at least 2 cups of vegetables per day. From breakfast on Sunday to the end of the day on Thursday, Sarah has eaten 8 cups. How many cups per day does Sarah need to eat of her vegetables in order to meet her daily minimum requirement for the week?
A: There are 7 days in a week and 2 cups are recommended per day, bringing the total to 7 days * 2 cups / day = 14 cups for the week. Out of the 14 total cups needed for the week, Sarah has already eaten 8, for a total of 14 cups - 8 cups = 6 cups left to consume for the week. Sunday through Thursday equals 5 days that have passed. If there are 7 days in the week then Sarah has 7 days - 5 days = 2 days left of the week. If she needs to eat 6 more cups in the next 2 days then she will have to eat 6 cups / 2 days = 3 cups per day over the next two days. The answer is 3.
Question: Kimberley, Ela, and Houston all are sent to collect firewood by their grammy. Kimberley collects ten pounds of firewood, and Houston collects 12 pounds of firewood. If the three of them managed to collect a total of 35 pounds of firewood, how many pounds were collected by Ela?
Answer: Kimberley and Houston collected 10 + 12 = 22 pounds of firewood. You can find how much Ela collected by subtracting that amount from the total amount collected: 35 - 22 = 13 pounds. The answer is 13.
Q: Jill sells girl scout cookies. This year, she wants to sell at least 150 cookie boxes. Her first customer buys 5 boxes, Her second one buys 4 times more than her first customer. Her third customer buys half as much as her second. The fourth customer buys 3 times as much as her third. Lastly, her final customer buys 10. How many boxes so Jill have left to sell to hit her sales goal?
A:
Jill's second customer buys 4 times more than her first customer's 5 boxes, so they buy 4 * 5 = 20 boxes. Jill's third customer buys half of what her second customer bought, so that means they buy 20 / 2 = 10 boxes. Jill's fourth customer buys 3 times as many as what her third customer bought, so that means they buy 10 * 3 = 30 boxes. Adding in the 5 boxes sold to the first customer, and the 10 boxes sold to the last one, that means Jill has sold 5 + 10 + 20 + 10 + 30 = 75 boxes. Since Jill's goal is 150 boxes sold, and she's only sold 75 so far, she needs to sell 150 - 75 = 75 more boxes to hit her goal. The answer is 75.