[Question]Joy can read 8 pages of a book in 20 minutes. How many hours will it take her to read 120 pages?
[Answer]In one hour, there are 3 sets of 20 minutes. So, Joy can read 8 x 3 = 24 pages in an hour. It will take her 120 / 24 = 5 hours to read 120 pages. The answer is 5.
Q: Val has three times as many dimes as nickels. If she accidentally finds twice as many nickels as she has in her older brother's treasure box, and takes them for herself, what would be the value of money she has, in dollars, if she had 20 nickels before finding the new ones from her brother's treasure box?
A: If Val currently has 20 nickels and finds twice as many nickels as she has in her older brother's treasure box, she will have 2 * 20 = 40 more nickels. The total number of nickels she'll have is 40 + 20 = 60. Since nickel is worth $0.05, the value of the nickels Val is having is 60 * 0.05 = $3. Val had three times as many dimes as nickels before she found the 40 new nickels, a total of 3 * 20 = 60 dimes. Since a dime has a value of $0.10, the value of the dimes that Val has is 60 * $0.10 = $6. Together, the value of the dimes and nickels Val has is worth $6 + $3 = $9. The answer is 9.
Question: Chad is measuring the size of different countries. He sees that Canada is 1.5 times bigger than the United States and Russia is 1/3 bigger than Canada. How many times bigger is Russia than the United States?
Answer: Canada equals 1.5 United States. Russia equals 2 United States because 1.5 x (1 + 1 / 3) = 2. The answer is 2.
[Question]A cafe has a few orders to cook and also needs to makes sandwiches for a group of customers that arrived. 3 local offices have each ordered 10 bacon sandwiches and half of the group that has arrived have asked for 4 bacon sandwiches each. If the cafe makes a total of 54 bacon sandwiches, how many customers are in the group of customers that arrived?
[Answer]The offices ordered a total of 3 offices * 10 sandwiches each = 30 sandwiches. So the group of customers must have ordered 54 total sandwiches 30 sandwiches for the offices = 24 sandwiches. This is a total of 24 sandwiches / 4 sandwiches per customer = 6 customers who ordered a sandwich. As only half the group ordered a bacon sandwich, the entire group must have consisted of 6 customers * 2 = 12 customers. The answer is 12.
Q: Anna wants to grow some lettuce in the garden and would like to grow enough to have at least 12 large salads. She estimates that, despite her best efforts, half of the lettuce will be lost to insects and rabbits. Each lettuce plant is estimated to provide 3 large salads. How many lettuce plants should Anna grow in the garden?
A: The total number of plants needed for 12 dinner salads (without loss to insects or rabbits) is 12 / 3 salads from each lettuce plant = 4 lettuce plants. Since Anna expects to lose half of her plants to insects and rabbits, so we need to plant twice as many plants or 4 * 2 = 8 lettuce plants. The answer is 8.
Question: Gary is buying chlorine for his rectangular pool, which is 10 feet long, 8 feet wide, and 6 feet deep. Gary needs to buy one quart of chlorine for every 120 cubic feet of water in his pool. If chlorine costs $3 a quart, how much does Gary spend on chlorine?
Answer:
First find the volume of the pool by multiplying the length by the width by the height: 10 ft * 8 ft * 6 ft = 480 cubic feet. Then divide the volume of the pool by the number of cubic feet one quart of chlorine can sterilize: 480 cubic feet / 120 cubic feet / quart = 4 quarts. Then multiply the number of quarts Gary needs to buy by the price per quart to find out how much money he spends: $3 / quart * 4 quarts = $12. The answer is 12.