Q: An author of a book got 6% of the total sales of the paper cover version of his books and 12% of the total sales of the hardcover version. If 32,000 copies of the paper cover version were sold at $0.20 each and 15,000 copies of the hardcover version were sold at $0.40 each, how much did the author earn?
A: The total earnings for the paper cover version were $0.20 x 32 000 = $6,400. So, the author earned $6,400 x 6 / 100 = $384 from the paper cover version. The total earnings for the hardcover version were $0.40 x 15,000 = $6,000. So, the author earned $6,000 x 12 / 100 = $720 from the hardcover version. Therefore, the author earned a total of $384 + $720 = $1104. The answer is 1104.
Question: A desert has 3/5 fewer palm trees than a nearby forest, which has 5000 palm trees. How many palm trees are there in both the desert and the forest combined?
Answer: The desert has 3 / 5 fewer palm trees than the forest, and since the forest has 5000 palm trees, the desert has 3 / 5 * 5000 = 3000 fewer palm trees. The total number of palm trees in the desert is 5000 - 3000 = 2000. Together, the desert and the forest have a total of 5000 + 2000 = 7000 palm trees. The answer is 7000.
[Question]Sandra wants to buy some sweets. She saved $10 for this purpose. Her mother gave her an additional $4, and her father twice as much as her mother. One candy costs $0.5, and one jelly bean $0.2. She wants to buy 14 candies and 20 jelly beans. How much money will she be left with after the purchase?
[Answer]Sandra's father gave her $4 * 2 = $8. So Sandra has in total $8 + $4 + $10 = $22. She wants 14 candies, so she is going to pay 14 candies * $0.50 / candy = $7 for them. She wants also 20 jellybeans, and they're going to cost 20 jellybeans * $0.20 / jellybean = $4. So after the purchase, she will be left with $22 - $4 - $7 = $11. The answer is 11.
Q: Mr. Isaac rides his bicycle at the rate of 10 miles per hour for 30 minutes. If he rides for another 15 miles, rests for 30 minutes, and then covers the remaining distance of 20 miles, what's the total time in minutes took to travel the whole journey?
A: If in one hour he covers 10 miles and rides for 15 miles at the rate of 10 miles per hour, then the time taken for the 15 miles will be 15 / 10 = 1.5 hours. The time in minutes is 1.5 * 60 = 90 minutes. The time taken for the remaining 20 miles at a rate of 10 miles per hour is 20 / 10 = 2 hours. The time in minutes is 2 * 60 = 120 minutes. The total time taken for the whole journey is the first 30 minutes + 90 + 30 minutes for resting + 120 minutes = 270 minutes. The answer is 270.
Question: There are 13 3-year-olds, 20 4-year-olds, 15 5-year-olds, and 22 six-year-olds at a particular Sunday school. If the 3 and 4-year-olds are in one class and the 5 and 6-year-olds are in another class, what is the average class size?
Answer: First find the total number of 3 - and 4 - year - olds: 13 kids + 20 kids = 33 kids. Then find the total number of 5 - and 6 - year - olds: 15 kids + 22 kids = 37 kids. Then add the two class sizes: 33 kids + 37 kids = 70 kids. Then divide the number of kids by the number of classes to find the average class size: 70 kids / 2 classes = 35 kids / class. The answer is 35.
Q: Cindy was hired to teach 4 math courses which required her to be in the classroom for 48 hours a week altogether. How much did Cindy earn for teaching 1 math course in a month with exactly 4 weeks if her hourly rate per class is $25?
A:
In a week, Cindy spends an average of 48 hours / week / 4 courses = 12 hours / week for 1 math course. In a month, 1 math course is 12 hours / week x 4 weeks / month = 48 hours. Therefore, she earns $25 / hour x 48 hours / week = $1200 a month for 1 math course. The answer is 1200.