Reasoning and answer: The cost of the toy cars is 4 × $0.95 = $3.80. The total cost of the toys is $3.80 + $6.00 = $9.80. Edward has $17.80 − $9.80 = $8.00 left.
The answer: 8
What was the question?
Question: Edward had $17.80 to spend at the toy store. He bought 4 toy cars that cost $0.95 each and a race track that cost $6.00. How much money does Edward have left to buy more toys?


The total revenue from the adults is 183 x $26 = $4758. The ticket price for children is $26 / 2 = $13. The total revenue from the children is 28 x $13 = $364. The total revenue of the concert is $4758 + $364 = $5122.
The answer: 5122
Reverse engineering the question: The music festival of Bassompierre begins tonight with a concert by the string orchestra "PIANISSIMO". The ticket price for adults is $26; for children, the price is half. The show starts at 9 pm and goes very well. At about 11:00 pm, the concert organizer made his accounts. There were 183 adults and 28 children who attended the show. What was the total revenue of the concert?


Reasoning and answer: Celia has budgeted $100 a week for 4 weeks for food, $100 x 4 = $400 worth of food for the month. She has one monthly cost of $1500 for her rent + $30 for video streaming services + $50 for her cell phone = $1580 of single monthly costs. Celia wants to set aside 10% of the $400 + $1580 = $1980 for her savings account. 10% of her savings account is .10 x 1980 = $198 to add to her savings account.
The answer: 198
What was the question?
Question: Celia is creating a budget for the next 4 weeks. She wants to spend no more than $100 a week on food. For rent for her apartment, she plans to spend $1500. She has $30 set aside for video streaming services for the month. She also has $50 planned for one month of cell phone usage. After she adds up all of her spending for the month she wants to set aside 10% of it to put into savings. How much money is Celia going to put into her savings account?


The puppy will consume 60 * 2 = 120 ounces of the special dog food in the first 60 days. This leaves 365 - 60 = 305 days where the puppy will consume 4 ounces of food per day, or 305 * 4 = 1220 ounces of the special food. Thus, the puppy requires a total of 120 + 1220 = 1340 ounces of food before it is 1 year old. Each 5 - pound bag contains 5 * 16 = 80 ounces of special dog food. Therefore, the puppy will need to eat 1340 / 80 = 16.75 bags of the special dog food, meaning the family will need to buy 17 bags.
The answer: 17
Reverse engineering the question: A family just bought a newborn puppy that must eat a special type of dog food until it is 1 year old. The puppy needs to eat 2 ounces of this special dog food per day during the first 60 days of its life. After that, it needs to eat 4 ounces per day of the special food until it is old enough to eat regular dog food. If the special dog food is only sold in 5-pound bags, and there are 16 ounces in a pound, how many bags will the family need to buy to feed the puppy until it is old enough to eat regular dog food?


Reasoning and answer: There were 20 - 5 = 15 units of non - defective smartphones. There were 3 + 7 = 10 units sold to customers A and C. So, 15 - 10 = 5 units were sold to customer B.
The answer: 5
What was the question?
Question: A store is selling mobile phones. This store contains 20 units of phones but the owner found out that there were 5 defective units. After he got rid of the defective units, he started to sell the rest of his units to customer A who bought 3 units, customer B who bought a certain amount of units, and customer C who bought 7 units. In the end, all non-defective units were sold. How many units were sold to Customer B?


Reasoning and answer: First find the total number of minnows by dividing the number of red minnows by the percentage of minnows that are red: 20 minnows / 40% = 50 minnows. Then subtract the percentages of red - and green - bellied minnows to find the percentage of white - bellied minnows: 100% - 40% - 30% = 30%. Then multiply the total number of minnows by the percentage that have white bellies: 30% * 50 minnows = 15 minnows.
The answer: 15
What was the question?
Question:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Mary is counting the number of minnows in the pond. 40% of the minnows have red bellies, 30% have green bellies and the rest have white bellies. If 20 minnows have red bellies, how many minnows have white bellies?