[Question]Reggie is playing marbles with his friend. His friend arrives with 100 marbles. Each game, they bet ten marbles and whoever wins gets to keep all the marbles. After 9 games, Reggie has 90 marbles. How many games has he lost?
[Answer]Reggie has lost 10 marbles because 100 - 90 = 10. Since each game was worth 10 marbles, Reggie has lost 1 game. The answer is 1.
Q: Bill's roof can bear 500 pounds of weight. If 100 leaves fall on his roof every day, and 1000 leaves weighs 1 pound, how many days will it take for his roof to collapse?
A: First, find how many leaves the roof can hold: 500 pounds * 1000 leaves / pound = 500000 leaves. Then divide that by the number of leaves that fall each day to find how many days before the roof collapses: 500000 leaves / 100 leaves / day = 5000 days. The answer is 5000.
Question: A big box store sees 175 people enter their store every hour. This number doubles during the holiday season. During the holiday season, how many customers will this big box store see in 8 hours?
Answer: They see 175 people per hour and this number doubles during the holiday season so that's 175 * 2 = 350 people per hour. In an 8 hour day, if 350 people visit every hour then they will see 8 * 350 = 2,800 people in 8 hours. The answer is 2800.
[Question]Heaven and her younger brother want to buy school supplies, so they ask their father for money, who gives them $100 in total to use. Heaven buys two sharpeners and four notebooks at $5 each, and her brother uses the remaining amount to buy ten erasers at $4 each and some highlighters. How much money did Heaven's brother spend on highlighters?
[Answer]Heaven spent 2 * 5 = $10 on sharpeners. She also spent 4 * 5 = $20 on notebooks. Heaven's brother used 10 * 4 = $40 to buy erasers. The total amount of money Heaven and her sister spent on sharpeners, notebooks, and erasers is 40 + 20 + 10 = $70. The total amount of money her brother spent on highlighters is 100 - 70 = $30. The answer is 30.
Q: Marla is thinking about getting a canvas tote bag to avoid using plastic bags at the grocery store. If making the canvas bag released 600 pounds of carbon dioxide, each plastic bag released 4 ounces of carbon dioxide, and Marla uses eight bags per shopping trips, how many shopping trips will she have to make before the canvas bag is the lower-carbon solution? (There are 16 ounces in a pound.)
A: First find how many ounces of carbon dioxide are released per shopping trip: 8 bags / trip * 4 oz / bag = 32 oz / trip. Then divide that amount by the number of ounces per pound to find the pounds of carbon per shopping trip: 32 oz / trip / 16 oz / pound = 2 pounds / trip. Then divide the amount of carbon used to make the tote bag by the amount of carbon saved per shopping trip to find the number of trips needed for the bag to be a better option: 600 pounds / 2 pounds / trip = 300 trips. The answer is 300.
Question: A hot dog stand sells 10 hot dogs every hour, each one selling for $2. How many hours does the stand need to run to make $200 in sales?
Answer:
First, we find out how much in sales the stand makes each hour by multiplying the number of hot dogs sold by the sales price, finding that 2 * 10 = 20 dollars in sales each hour. Then we divide the sales goal for the day by the sales per hour, finding that the stand needs to be open for 200 / 20 = 10 hours to hit its sales goal. The answer is 10.