Detailed Instructions: The task is to generate the correct answer for a given math problem.
Problem:Problem: a , b and c start a business each investing 20,000 . after 5 months a withdrew 5000 , b withdrew 4000 and c invests 6000 more . at the end of the year , a total profit of 69,900 was recorded . find the share of b .
Solution:
28,200