TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: a and b are 90 km apart they start to move each other simultaneously a at speed 10 and b at 5 km / hr if every hour they double their speed what is distance that a pass until he meet b ?

SOLUTION: 60 km

PROBLEM: Problem: two numbers are in the ratio of 7 : 6 . if 18 be subtracted from each , they are in the ratio of 6 : 5 . find the numbers ?

SOLUTION: 7,6

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