[Question]Nicole has 4 fish tanks. The first two tanks need 8 gallons of water each and the other two need 2 fewer gallons of water each than the first two tanks. If Nicole needs to change the water of the aquarium every week, how many gallons of water will she need in four weeks?
[Answer]The first two tanks need 8 x 2 = 16 gallons of water. The other two tanks need 8 - 2 = 6 gallons of water each. So, the two other tanks need 6 x 2 = 12 gallons of water. Nicole needs 16 + 12 = 28 gallons of water every week for her four tanks. Therefore, she needs a total of 28 x 4 = 112 gallons of water in four weeks. The answer is 112.
Q: Arman is six times older than his sister. His sister is 2 years old four years ago. In how many years will Arman's age be 40?
A: Arman's sister is 4 + 2 = 6 years old now. So, Arman is 6 x 6 = 36 years old. Hence, Arman will be 40 in 40 - 36 = 4 years. The answer is 4.
Question: Cassandra collected 5000 pennies for the charity drive. James collected 276 fewer pennies. How many pennies did they donate to charity?
Answer: James has 5000 - 276 = 4724 pennies. They donated a total of 5000 + 4724 = 9724 pennies. The answer is 9724.
[Question]Shelby had $20 to take to the book fair. She bought one book for $8 and another for $4. She decided to buy as many $4 posters as she could with the money she had left. How many posters can she buy?
[Answer]She spent $8 + $4 = $12 on books. She started with $20, so she has $20 - $12 = $8 left to spend on posters. Each poster costs $4, so she can buy $8 / $4 = 2 posters. The answer is 2.
Q: Mell went to a cafeteria to spend some time with her friends. She ordered two cups of coffee and one piece of cake. Two of her friends ordered the same, but each of them also bought a bowl of ice cream. One cup of coffee is $4, one piece of cake is $7, and a bowl of ice cream is $3. How much money did Mell and her friends need to pay at the cafeteria?
A: Mell's friends bought two bowls of ice cream, so that was a cost of 2 * 3 = $6. They all three bought two cups of coffee each, so they ordered 2 * 3 = 6 cups of coffee in total. The cost of the coffee was therefore 6 * 4 = $24. All her friends bought one piece of cake each, so the cost of it in total was 3 * 7 = $21. Mell and her friends spent in total 6 + 24 + 21 = $51 at the cafeteria. The answer is 51.
Question: Alfonso earns $6 each day walking his aunt’s dog. He is saving to buy a mountain bike helmet for $340. Currently, he already has $40. If he walks his aunt's dog 5 days a week, in how many weeks should Alfonso work to buy his mountain bike?
Answer:
Alfonso has to work for the $340 - $40 = $300. In a week, he earns $6 x 5 = $30. Thus, he needs to work $300 / $30 = 10 weeks to buy the bike. The answer is 10.