TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: a and b can do a piece of work in 7 days . with the help of c they finish the work in 5 days . c alone can do that piece of work in ?

SOLUTION: 30 days

PROBLEM: Problem: a teacher grades students ' tests by subtracting twice the number of incorrect responses from the number of correct responses . if student a answers each of the 100 questions on her test and receives a score of 76 , how many questions did student a answer correctly ?

SOLUTION: 92

PROBLEM: Problem: a truck drives 80 miles on local roads at 30 mph , and 50 miles on the highway at 60 mph , the truck also take a hour lunch break . what is the average speed of the entire trip ?

SOLUTION:
30 mph