TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: amit and ananthu can do a work in 10 days and 20 days respectively . amit started the work and left after 2 days . ananthu took over and completed the work . in how many days was the total work completed ?

SOLUTION: 18 days

PROBLEM: Problem: a man can do a piece of work in 7 days , but with the help of his son , he can finish it in 3 days . in what time can the son do it alone ?

SOLUTION: 4 1 / 5

PROBLEM: Problem: a 150 meter long train crosses a man standing on the platform in 3 sec . what is the speed of the train ?

SOLUTION:
180 kmp