Step-by-step reasoning process: He needs 10 cans because 80 / 8 = 10. He spends $5 because 10 x .5 = 10.
The question and answer:
Question and answer: Peter needs 80 ounces of soda for his party. He sees that 8 oz cans cost $.5 each. How much does he spend on soda if he buys the exact number of cans he needs?
The answer is 5

Step-by-step reasoning process: He reads 2 * 50 = 100 pages a day. So he reads 7 * 100 = 700 pages a week. So it takes 2800 / 700 = 4 weeks.
The question and answer:
Question and answer: John reads his bible every day. He reads for 2 hours a day and reads at a rate of 50 pages an hour. If the bible is 2800 pages long how many weeks will it take him to read it all?
The answer is 4

Step-by-step reasoning process: Albert has 4 * 9 books belonging to Stu = 36 books. So the pair have a combined total of 36 books belonging to Albert + 9 books belonging to Stu = 45 books.
The question and answer:
Question and answer:
If Stu has 9 books and Albert has 4 times as many books as Stu, how many books do Stu and Albert have in total?
The answer is 45