Reasoning and answer: There were 10 + 15 = 25 girls in the party. So, there were a total of 15 + 25 = 40 attendees. 40 x 2 = 80 cans of soft drinks are needed. So, Mary bought 80 / 8 = 10 boxes of soft drinks. Therefore, Mary spent 10 x $5 = $50 on soft drinks.
The answer: 50
What was the question?
Question: There were 15 males and 10 more girls at the party. Each attendee received 2 cans of soft drinks. If Mary bought several boxes of soft drinks where a box contains 8 cans and is priced at $5 for each box, how much did Mary spend on soft drinks?
35 miles into 5 equal portions will be 35 / 5 = 7 miles each. Abel traveled at a speed of 40 miles per hour for 0.7 hours so he will cover 40 * 0.7 = 28 miles. 7 miles make a portion so 28 miles is equivalent to 28 / 7 = 4 portions.
The answer: 4
Reverse engineering the question: The journey from Abel's house to Alice's house is 35 miles and is divided into 5 equal portions. Abel is driving at a speed of 40 miles per hour. After traveling for 0.7 hours, how many portions of the journey has he covered?
Reasoning and answer: First find the size of the second bell: 50 pounds * 2 = 100 pounds. Then find the size of the third bell: 100 pounds * 4 = 400 pounds. Then add the amount of bronze used for each bell to find the total: 100 pounds + 400 pounds + 50 pounds = 550 pounds.
The answer: 550
What was the question?
Question: Martin is casting three bells for the church's belfry. The first bell takes 50 pounds of bronze, the second bell is twice the size of the first bell, and the third bell is four times the size of the second bell. How much bronze does he need total?
Since 1 hour is equal to 60 minutes, then 45 minutes is equal to 45 / 60 = 0.75 hours. Then, the speed in kilometers per hour is 1.5 km / 0.75 hour = 2 kilometers per hour.
The answer: 2
Reverse engineering the question: A boy runs 1.5 km in 45 minutes. What is his speed in kilometers per hour?
Reasoning and answer: She gave out 50 - 8 = 42 stickers in total. She gave 4 * 5 = 20 stickers to her friends. She gave out 42 - 20 = 22 stickers to the rest of the class. This means there are 22 / 2 = 11 other students in the class. There are a total of 1 + 5 + 11 = 17 students in the class.
The answer: 17
What was the question?
Question: Mary brought 50 stickers to class. She gave 4 stickers to each of her 5 friends. She gave everyone else in class two stickers each. If she has 8 stickers left over, how many students are in the class, including Mary?
Reasoning and answer: He needs 1000 * 10 = 10000 liters of gas. So he needs 10000 / 500 = 20 tanks.
The answer: 20
What was the question?
Question:
John buys 1000 balloons. Each balloon holds 10 liters of air. If he buys 500-liter tanks of gas, how many tanks does he need to buy to fill all the balloons?