[Question]Stacy went to a store to buy some pairs of shorts. Each pair normally cost $10, but there's a discount of 10% on the total cost for people who purchase 3 or more pairs at once. How much can she save by buying 3 pairs at once as opposed to purchasing them individually at different times?
[Answer]Without the discount, each pair cost $10 so 3 pairs cost 3 * $10 = $30. With a discount of 10% on the total cost, she can pay only $30 - ($30 * (10 / 100)) = $27. By buying 3 at once in order to get the discount, she can save $30 - $27 = $3. The answer is 3.
Q: Dennis collected 10 rocks. He put all of them in his aquarium but his fish ate half of them. He was able to make the fish spit two out. How many of Dennis's rocks are left?
A: Dennis had 10 / 2 = 5 rocks left after the fish ate them. He made the fish spit two out, which left Dennis with 5 + 2 = 7 rocks. The answer is 7.
Question: The girl scouts earned $30 total from selling delicious cookies. They want to go to the pool. It will cost them $2.50 per person to go and 10 people are going. What is the amount left?
Answer: The girls paid $2.50 / person * 10 people = $25. The girls have $30 - $25 = $5 left. The answer is 5.
[Question]Cindy was 5 years old. Her sister Jan was 2 years older than Cindy. Their oldest sister Marcia was twice as old as Jan. Greg was two years older than Marcia. How old was Greg?
[Answer]Jan was 2 years older than Cindy who was 5 so 2 + 5 = 7 years old. Marica was twice as old as Jan so 2 * 7 = 14 years old. Greg was 2 years older than Marcia who was 14 so 2 + 14 = 16 years old. The answer is 16.
Q: Jane had a 500 page book to read. The first half of the book Jane read with a speed of 10 pages per day, and the second half with a speed of 5 pages a day. How many days did Jane spend reading this book?
A: Half of the book means 500 / 2 = 250 pages. Reading the first half took Jane 250 / 10 = 25 days. Reading the second half of the book took Jane 250 / 5 = 50 days. So in total Jane needed 25 + 50 = 75 days to read the whole book. The answer is 75.
Question: Madeline needs $1200 to pay rent, $400 for groceries, $200 for medical expenses, and $60 for utilities. She also wants to save $200 in case of an emergency. She makes $15 per hour at her job. How many hours will Madeline need to work this month?
Answer:
Madeline needs 1200 + 400 + 200 + 60 + 200 = $2060 to pay all of her bills. She will need to work $2060 / $15 per hour = 137.33 hours. She will need to work 138 hours to pay all of her bills. The answer is 138.