Question: Roxanne bought 2 cups of lemonade for $2 each and 2 sandwiches for $2.50 each. How much change must she get from a $20 bill?
Answer: Two cups of lemonade amount to $2 x 2 = $4. Two sandwiches amount to $2.50 x 2 = $5. So, the total amount that Roxanne had to pay was $4 + $5 = $9. Thus, her change must be $20 - $9 = $11. The answer is 11.
[Question]Dustin and Sam are both reading. Dustin can read 75 pages in an hour. Sam can read 24 pages in an hour. How many more pages does Dustin read in 40 minutes compared to Sam?
[Answer]Dustin reads 1.25 pages a minute because 75 / 60 = 1.25. Dustin reads 50 pages in 40 minutes because 40 x 1.25 = 50. Sam reads .4 pages a minute because 24 / 60 = .4. Sam reads 16 pages in 40 minutes because 40 x .4 = 16. Dustin reads 34 more pages than Sam because 50 - 16 = 34. The answer is 34.
Q: Lisa has decided to replace her old cutlery. As she is going through the cupboards, she sees the spoons from when each of her 4 children were babies as well as 2 decorative spoons she created. She doesn't want to get rid of any of these so she adds them to her new set of cutlery. The new set of cutlery has 10 large spoons and 15 teaspoons. If the children each had 3 spoons when they were babies, how many spoons does Lisa now have?
A: From the baby spoons, Lisa holds 4 children * 3 spoons each = 12 baby spoons. Adding this to the decorative spoons means Lisa has 12 baby spoons + 2 decorative spoons = 14 old spoons. In the new set of cutlery, there is a total of 10 large spoons + 15 teaspoons = 25 new spoons. So in total, Lisa has 14 old spoons + 25 new spoons = 39 spoons. The answer is 39.
Question: Hank reads the newspaper every morning, 5 days a week for 30 minutes. He reads part of a novel every evening, 5 days a week, for 1 hour. He doubles his reading time on Saturday and Sundays. How many minutes does Hank spend reading in 1 week?
Answer: He reads 30 minutes in the morning 5 days a week for a total of 30 * 5 = 150 minutes. He doubles his reading time on the weekends so 30 * 2 = 60 minutes per day. He reads 60 minutes on Saturday and Sunday in the mornings for a total of 60 + 60 = 120 minutes. He reads 1 hour in the evenings 5 days a week for a total of 1 * 5 = 5 hours. He doubles his reading time on the weekends so 1 * 2 = 2 hours per day. He reads 2 hours on Saturday and Sunday in the evenings for a total of 2 + 2 = 4 hours. He read 5 + 4 = 9 hours which, when converted to minutes is 9 * 60 = 540 minutes. He reads 150 minutes in the morning and 120 minutes in the evenings and 540 over the weekend for a total of 150 + 120 + 540 = 810 minutes in 1 week. The answer is 810.
[Question]Mr. Fortchaud turns on his heater on the 1st of November, 2005. The fuel tank was then full and contained 3,000 L. On January 1, 2006, the tank counter indicated that 180 L remained. Mr. Fortchaud again filled his tank completely. On 1 May 2006, Mr. Fortchaud decided to stop heating and he read 1,238 L on the meter. What the volume of fuel oil that was used between 1 November 2005 and 1 May 2006?
[Answer]I calculate consumption between November 1, 2005 and January 1, 2006: 3,000 – 180 = 2820 L. I calculate consumption between January 1, 2006 and May 1, 2006: 3,000 – 1238 = 1762 L. I calculate the total consumption between November 1st and May 1st: 2,820 + 1,762 = 4582 L. The answer is 4582.
[Question]A town is holding a fireworks display for New Year’s Eve. They light enough fireworks to show the full year then light enough fireworks to write “HAPPY NEW YEAR” in the sky. They then light another 50 boxes of fireworks as part of the display. Each box of fireworks contains 8 fireworks. If it takes 6 fireworks to display a number and 5 fireworks to display a letter, how many fireworks are lit during the display?
[Answer]
Writing out the full year uses 4 numbers so this takes 4 numbers * 6 fireworks per number = 24 fireworks. “HAPPY NEW YEAR” contains 12 letters so this takes 12 letters * 5 fireworks per letter = 60 fireworks. There is therefore a total of 24 + 60 = 84 fireworks lit at the start of the display. From the boxes, they lit another 50 boxes * 8 fireworks per box = 400 fireworks. So in total, the whole display uses 84 + 400 = 484 fireworks. The answer is 484.