[Question]A cake has 8 slices and each slice contains 347 calories. A pan of brownies has 6 brownies and each slice contains 375 calories. How many more calories does the cake have?
[Answer]The cake has 8 slices * 347 calories = 2776 calories. The brownies have 6 slices * 375 = 2250 calories. The cake has 2776 calories - 2250 = 526 more calories. The answer is 526.
Q: Melisa and Jennifer threw a fiftieth birthday party for their father at a local restaurant. When the bill came, Melisa added a 15% tip of $42. Jennifer said that the service was wonderful and they should leave a 20% tip instead. How much is a 20% tip?
A: If 15% is known to be $42, then 5% can be found by dividing $42 ÷ 3 = $14. So 20% is $14 + $42 = $56. The answer is 56.
Question: When the schools were opened for the new year, Hendrix's class had 20 new students. However, at the end of the school year, 1/3 of the students in Hendrix class had transferred to other schools. If the number of students that were in Hendrix's class before 20 new students joined was 160, calculate the number of students that were in the class at the end of the year.
Answer: After 20 new students joined the class at the start of the school year, the number of students increased to 160 + 20 = 180. However, at the end of the year, 1 / 3 * 180 = 60 students had transferred from the school. The total number of students remaining in the school at the end of the year is 180 - 60 = 120. The answer is 120.
[Question]Pauly is making ice cubes. He needs 10 pounds of cubes. He knows that 2 ounces of water make 1 cube and each cube weighs 1/16th of a pound. It takes him 1 hour to make 10 cubes. Every hour his ice maker run costs $1.50. Every ounce of water costs $0.10. How much will it cost to make all the ice?
[Answer]He needs 160 ice cubes because 10 / (1 / 16) = 160. It will take him 16 hours because 160 / 10 = 16. His ice maker will cost $24 to run because 16 x 1.5 = 24. He will need 320 ounce of water because 160 x 2 = 320. This will cost him $32 because 320 x .1 = 32. It will cost in total $56 to make all the ice because 24 + 32 = 56. The answer is 56.
Q: James has 20 pairs of red socks and half as many black socks. He has twice as many white socks as red and black combined. How many total socks does he have combined?
A: He has 20 / 2 = 10 black socks. So he has 20 + 10 = 30 black and red socks. So he has 30 * 2 = 60 white socks. So he has 60 + 30 = 90 total socks. The answer is 90.
Question: David found $12 on the street. He then gave it to his friend Evan who has $1 and needed to buy a watch worth $20. How much does Evan still need?
Answer:
The total amount Evan has is $1 + $12 = $13. So Evan still needs $20 - $13 = $7. The answer is 7.