The extra cost for coloring is 160 * .5 = $80. So the total cost was 160 + 80 = $240.
The answer: 240
Reverse engineering the question: John commissions an artist to make him a 9 by 13 drawing. A black and white drawing that size would cost $160. He wants a color drawing so that is 50% more expensive. How much did he pay?


Reasoning and answer: The zoo has 50 * 8 = 400 visitors in one day. The number of visitors that go to the gorilla exhibit in one day is 400 * 0.80 = 320 visitors.
The answer: 320
What was the question?
Question: The zoo has 50 new visitors entering the zoo every hour. The zoo is open for 8 hours in one day. If 80% of the total visitors go to the gorilla exhibit, how many visitors go to the gorilla exhibit in one day?


In the afternoon, she baked 20 + 15 = 35 cupcakes more cupcakes. Therefore, she baked a total of 20 + 35 = 55 cupcakes.
The answer: 55
Reverse engineering the question: Ivy baked 20 cupcakes in the morning and fifteen more cupcakes in the afternoon than in the morning. How many cupcakes did she bake?


Reasoning and answer: For the 30 - day pass to be cheaper, then the average fare should be cheaper than the $2 one - way ticket. If the 30 - day pass costs $50, then I should take at least $50 / $2 = 25 rides to pay the same as a one - way ticket. However, given that we want the 30 - day pass per ride to be strictly cheaper we should ride at least 25 + 1 = 26 times.
The answer: 26
What was the question?
Question: A one-way ticket costs $2. A 30-day pass costs $50. What's the minimum number of rides you will need to take every month so that the 30-day pass is strictly cheaper per ride?


Penny buys 4 pairs of socks for $2 x 4 = $8. In total, Penny spent $8 + $7 = $15 on 4 pairs of socks and a hat. Penny has $20 - $15 = $5 left after buying 4 pairs of socks and a hat.
The answer: 5
Reverse engineering the question: Penny has $20. Penny buys 4 pairs of socks for $2 a pair and a hat for $7. How much money does Penny have left?


He sold 50 cones because 100 / 2 = 50. He gave away 10 cones because 50 / 5 = 10.
The answer: 10
Reverse engineering the question:
Dan owns an ice cream shop and every sixth customer gets a free ice cream cone. Cones cost $2 each. If he sold $100 worth of cones, how many free ones did he give away?