Answer the following question.
A pen costs $9 more than a pencil. If a pencil costs $2, find the total cost of both items.
Step-by-step reasoning process: A pen costs $9 more than $2 which is $9 + $2 = $11. Altogether they cost $11 + $2 = $13.
The answer is 13.

Answer the following question.
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?
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 answer is 4.

Answer the following question.
Ruth goes to school 8 hours a day and 5 days a week. She is in math class 25% of this time. How many hours per week does she spend in math class?
Step-by-step reasoning process: She is in school for 40 hours because 5 x 8 = 40. She is in math class for 10 hours a week because 40 x .25 = 10.
The answer is 10.

Answer the following question.
One-third of a class of 39 students took part in a math competition. How many students did not participate in the competition?
Step-by-step reasoning process: Since one - third of the class participated, there are 39 * 1 / 3 = 13 students who participated in the competition. This means that 39 13 = 26 students did not participate.
The answer is 26.