The task is to generate the correct answer for a given math problem.

Q: Problem: what is the total number of integers between 10 and 50 that are divisible by 2 ?

A: 19
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Q: 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 .

A: 28,200
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Q: Problem: a 300 m long train crosses a platform in 48 sec while it crosses a signal pole in 18 sec . what is the length of the platform ?

A:
500
****