Q: Cindy was 5 years old. Her sister Jan was 2 years older than Cindy. Their oldest sister Marcia was twice as old as Jan. Greg was two years older than Marcia. How old was Greg?
A: 16
Step-by-step reasoning process: Jan was 2 years older than Cindy who was 5 so 2 + 5 = 7 years old. Marica was twice as old as Jan so 2 * 7 = 14 years old. Greg was 2 years older than Marcia who was 14 so 2 + 14 = 16 years old.

Q: While Greg was camping with his family for a week, it rained for 3 days. When he looked at the weather records, he saw that the amount of rain was 3 mm, 6 mm, and 5 mm on the three days. During the same week, it rained 26 mm at his house. How much less rain did Greg experience while camping?
A: 12
Step-by-step reasoning process: While camping there was 3 + 6 + 5 = 14 mm of rain in 3 days. Greg experienced 26 14 = 12 mm less rain at the campsite.

Q: Josh has some money. He spent $1.75 on a drink, and then spent another $1.25. If he had $6 left, how much money, in dollars, did Josh have at first?
A: 9
Step-by-step reasoning process: Josh spent 1.75 + 1.25 = 3 dollars in total. Josh had 6 + 3 = 9 dollars at first.

Q: The average of marks scored in four tests by Jake was 75. If jake scored 80 marks in the first test and 10 more in the second test, and an equal number of marks in the third and fourth test, calculate the marks he scored in the third test.
A: 65
Step-by-step reasoning process: Since the average of marks scored in four tests by Jake was 75, the total marks that he scored in the four tests are 4 * 75 = 300. If jake scored 80 marks in the first test and 10 more in the second test, he scored 80 + 10 = 90 marks in the second test. The combined marks for the first and the second test is 90 + 80 = 170. The total marks Jake scored in the third and fourth test is 300 - 170 = 130. Since Jake scored an equal number of marks in the third and fourth tests, he scored 130 / 2 = 65 marks in each of the third and fourth tests.