Question: Michelle is bringing sandwiches to work to give to her co-workers. She gives 4 sandwiches to one of her co-workers and keeps twice this amount for herself. If she had originally made 20 sandwiches, how many sandwiches does she have left to give to her other co-workers?
Answer: Step-by-step reasoning process: Michelle kept 4 sandwiches * 2 = 8 sandwiches for herself. This leaves 20 total sandwiches 4 sandwiches for a coworker 8 sandwiches for herself = 8 sandwiches for her other co - workers.
So the answer is 8.

Question: A bookseller sells 15 books in January, 16 in February and a certain number of books in March. If the average number of books he sold per month across all three months is 16, how many books did he sell in March?
Answer: Step-by-step reasoning process: He sold an average of 16 books per month across all 3 months so he must have sold a total of 3 * 16 = 48 books in those 3 months. He sold 15 + 16 = 31 in January and February. He must have sold 48 - 31 = 17 books in March.
So the answer is 17.

Question: Tom has a job mowing lawns around his neighborhood. Each month he spends $17 on gas and mows 3 lawns, charging $12 per lawn mowed. Last month he also made extra money pulling weeds for $10. How much profit did Tom earn last month?
Answer: Step-by-step reasoning process: Tom earns 3 lawns * $12 per lawn = $36 per month. Tom earned $36 + $10 = $46 last month. Tom's profit last month was $46 - $17 gas money = $29.
So the answer is 29.

Question: Leo's assignment was divided into three parts. He finished the first part of his assignment in 25 minutes. It took him twice as long to finish the second part. If he was able to finish his assignment in 2 hours, how many minutes did Leo finish the third part of the assignment?
Answer:
Step-by-step reasoning process: It took Leo 25 x 2 = 50 minutes to finish the second part of the assignment. Leo finished the first and second parts of the assignment in 25 + 50 = 75 minutes. He finished the entire assignment in 60 x 2 = 120 minutes. Therefore, it took Leo 120 - 75 = 45 minutes to finish the third part of the assignment.
So the answer is 45.