Question: Lisa has 18 more dresses than Ana. If the number of their dresses combined is 48, how many dresses does Ana have?
Answer with step-by-step thinking: If Lisa's surplus of 18 dresses is taken away from the total, they will have 48 - 18 = 30 dresses in total. They would each have the same number of dresses from these 30 i.e. 30 / 2 = 15 dresses which is the number of dresses that Ana actually has.
So the answer is 15.

Question: Brendan has entered a kickboxing competition and wins matches against multiple contestants. He wins all of the matches in the first 2 rounds, each of which had 6 matches, then wins half of the 4 matches in the last round. How many matches did Brendan win throughout the competition?
Answer with step-by-step thinking: In the first 2 rounds, Brendan wins a total of 2 rounds * 6 matches per round = 12 matches. In the last round, Brendan wins half of the matches which is 4 matches / 2 = 2 matches. Throughout the competition, Brendan has therefore won 12 + 2 = 14 matches.
So the answer is 14.

Question: Arthur knows that he needs to finish 800 pages of reading over the summer. He has read 80% of a 500-page book and 1/5 of a 1000 page book. How many more pages does he need to reach to meet his goal?
Answer with step-by-step thinking:
He read 400 pages from the 500 page book because 500 x .8 = 400. He read 200 pages from the 1000 page book because 1000 x (1 / 5) = 200. He has read 600 pages in total. He needs to read 200 more pages to reach 800 pages because 800 - 600 = 200.
So the answer is 200.