[Question]The number of students in Kylie's class is 50. In a particular test, ten students scored 90 marks, 15 scored ten marks fewer than the first ten students, and the rest scored 60 marks each. What are the average marks for the whole class?
[Answer]The total marks for the first ten students are 90 * 10 = 900 marks. The 15 students who scored ten marks fewer than the first ten had 90 - 10 = 80 marks each. The total marks for the following 15 students are 15 * 80 = 1200 marks. The total number of students who scored above sixty is 10 + 15 = 25. If 50 students were present in the class, those who scored sixty are 50 - 25 = 25. If 25 students scored 60, then their total marks are 60 * 25 = 1500 marks. The whole class scored a total of 1500 + 1200 + 900 = 3600 marks. The average for the class is 3600 / 50 = 72 marks. The answer is 72.
Q: James prints out 2 books. They are each 600 pages long. He prints out double-sided and 4 pages per side. How many sheets of paper does he use?
A: He printed 600 * 2 = 1200 pages. Each sheet of paper was 4 * 2 = 8 pages. So he used 1200 / 8 = 150 sheets of paper. The answer is 150.
Question: Julio makes a mocktail every evening. He uses 1 tablespoon of lime juice and tops with 1 cup of sparkling water.  He can usually squeeze 2 tablespoons of lime juice per lime. After 30 days, if limes are 3 for $1.00, how much will he have spent on limes?
Answer: He uses 1 tablespoon of lime juice per drink so over 30 days that's 1 * 30 = 30 tablespoons of lime juice. He can get 2 tablespoons of lime juice per lime and he will use 30 tablespoons of lime juice so he will need 30 / 2 = 15 limes. The limes are 3 for $1.00 and he needs 15 limes so that's 15 / 3 = $5.00. The answer is 5.
[Question]Joyce, Michael, Nikki, and Ryn have a favorite movie. Joyce's favorite movie is 2 hours longer than Michael's movie. Nikki's movie is three times as long as Michael's movie, and Ryn's favorite movie is 4/5 times as long as Nikki's favorite movie. If Nikki's favorite movie is 30 hours long, calculate the total number of hours of their favorite movies together.
[Answer]Since Nikki's favorite movie is 30 hours long, Ryn's favorite movie is 4 / 5 * 30 = 24 hours long. The total number of hours for Nikki's and Ryn's favorite movies is 24 + 30 = 54 hours long. Nikki's movie is also three times as long as Michael's favorite movie, meaning Michael's favorite movie is 30 / 3 = 10 hours long. Together, Nikki, Ryn, and Michael's favorite movies are 54 + 10 = 64 hours long. If Joyce's favorite movie is 2 hours longer than Michael's favorite movie, then her favorite movie is 10 + 2 = 12 hours long. The length of Nikki, Ryn, Michael, and Joyce's favorite movies is 64 + 12 = 76 hours. The answer is 76.
Q: A store sells pencils and erasers. It has a rule that for every pencil you buy, you must buy 2 erasers which cost 1/2 the price of the pencils. If they sold 20 pencils and earned $80, how much do erasers cost?
A: They sold 40 erasers because 20 x 2 = 40. Therefore 20(Pencil Price) + (1 / 2)(40 x Pencil Price) = 80. Therefore 40(Pencil Price) = 80. Therefore (Pencil Price) equals 2 because 80 / 40 = 2. An eraser costs $1 because 2 / 2 = 1. The answer is 1.
Question: A local restaurant is offering an 8 piece fried chicken bucket and 2 sides for $12.00 that will feed 6 people. If Monty was having a family reunion for 36 family members, how much will it cost him to buy enough chicken and sides to feed everyone one serving?
Answer:
Monty needs to feed 36 family members and each chicken / meal combo feeds 6 people so he needs 36 / 6 = 6 combos. Each chicken / meal combo costs $12.00 and he needs 6 so it will cost him 12 * 6 = $72.00 to feed everyone. The answer is 72.