There was a net immigration to the country of 50,000 - 30,000 = 20,000. So the total number of people before birth is 300,000 + 20,000 = 320,000. That means 320,000 / 8 = 40,000 get pregnant. So 40,000 / 4 = 10,000 have twins. So that means they have 10,000 * 2 = 20,000 children. There are 40,000 - 10,000 = 30,000 children from single births. So the total number of people is 320,000 + 30,000 + 20,000 = 370,000.
The answer: 370000
Reverse engineering the question: A city has a population of 300,000. 50,000 people immigrate to the country and then 30,000 people leave. After that 1/8 of the population gets pregnant and 1/4 of those people have twins. How many people are there after the births?


Reasoning and answer: If they agreed to give the winner twice as much money as Braden had in his money box, after winning the bet, Braden received 2 * $400 = $800. Braden increased the total amount of money in his money box to $800 + $400 = $1200.
The answer: 1200
What was the question?
Question: Braden had $400 in his money box. He had also placed a bet today with Byan that the Raptors will beat the Bulls. If the game's outcome was as Braden predicted, and he and Bryan had agreed to give the winner twice as much money as Braden had in his money box, calculate the total amount of money Braden had in his money box after winning the bet?


If it takes 15 minutes for Dante to go to Hidden Lake and 7 minutes to walk back to the Park Office, he spends a total of 15 + 7 = 22 minutes on the trip. When Dante arrives at the Park Office, he will have been gone from the Park Office 32 minutes altogether, and since he passed by the Lake Park restaurant from The Park Office, his walk from Park Office to the Lake Park restaurant took 32 - 22 = 10 minutes.
The answer: 10
Reverse engineering the question: It takes 15 minutes for Dante to go to Hidden Lake. From Hidden Lake, he has to walk back to the Park Office and it takes him 7 minutes. When he arrives there, he will have been gone from the Park Office 32 minutes altogether. If he had walked to the Lake Park restaurant from the Park office before taking the 15 minute walk to Hidden Lake, how long is the walk from Park Office to the Lake Park restaurant?


Reasoning and answer: The cafeteria can seat 15 x 10 = 150 people. Usually, 150 x 1 / 10 = 15 seat are unseated. Thus, 150 - 15 = 135 seats are usually taken.
The answer: 135
What was the question?
Question: There are 15 tables in the school's cafeteria. Each table can seat 10 people. Usually, only 1/10 of the seats are left unseated. How many seats are usually taken?


First find the total number of blue sequins: 6 rows * 8 sequins / row = 48 sequins. Then find the total number of purple sequins: 5 rows * 12 sequins / row = 60 sequins. Then find the total number of green sequins: 9 rows * 6 sequins / row = 54 sequins. Then add the number of each color of sequin to find the total number of sequins: 48 sequins + 60 sequins + 54 sequins = 162 sequins.
The answer: 162
Reverse engineering the question: Jane is sewing sequins onto her trapeze artist costume. She sews 6 rows of 8 blue sequins each, 5 rows of 12 purple sequins each, and 9 rows of 6 green sequins each. How many sequins does she add total?


The total cost of The Life Journey is 3 × $100 = $300. The total cost of When You Rescind is 3 × $85 = $255. The total cost of A Day a Life is 3 × $50 = $150. The total cost for all the CDs is $150 + $255 + $300 = $705.
The answer: 705
Reverse engineering the question:
I went to the music shop and there were CDs of The Life Journey for $100, A Day a Life for $50, and When You Rescind for $85 on display. If I bought 3 of each CD to share with my friends, what's the total amount of money I spent in the shop?