Question: Elsa and her sister watch an opera show every year at Central City Opera. Last year, opera seating cost $85 per ticket. This year, it costs $102. What is the percent increase in the cost of each ticket?
Answer: Step-by-step reasoning process: The ticket price increase is $102 - $85 = $17. So there is 17 / 85 x 100% = 20% increase of price.
So the answer is 20.

Question: Angela has a collection of 24 pieces of rare action figures. She sold off a quarter of them at the pawnshop and gave one-third of the remainder to her daughter. How many does she have left?
Answer: Step-by-step reasoning process: One - quarter of 24 action figures is 24 * (1 / 4) = 6. She sold off 6 action figures so she has 24 - 6 = 18 left. One - third of 18 is 18 * (1 / 3) = 6. She gave out 6 so she has 18 - 6 = 12 left.
So the answer is 12.

Question: Raul had $87 to spare so he decided to go to the bookshop. Raul bought 8 comics, each of which cost $4. How much money does Raul have left?
Answer: Step-by-step reasoning process: He spent 8 comics $4 / comic = $32 on comics. Raul has $87 - $32 = $55 left.
So the answer is 55.

Question: Mrs. Smith wanted to buy wears worth $500. She went to a boutique with the $500 but by the time she had picked out everything she liked, she realized that she would need two-fifths more money than she had. If the shop owner gave her a discount of 15%, how much more money will she still need?
Answer:
Step-by-step reasoning process: Two fifths of $500 is (2 / 5) * $500 = $200. She needed $200 more than $500 which is $200 + $500 = $700. 15% of $700 is (15 / 100) * $700 = $105. She was given a $105 discount so she has to pay $700 - $105 = $595. She would still need $595 - $500 = $95.
So the answer is 95.