A invested Rs 76000 in a business. After few months, B joined him with Rs 57000. The total profit was divided between them in the ratio 2 : 1 at the end of the year. After how many months did B join?  Choose one:
A) 2 B) 3 C) 4 D) 5 E) 6
Explanation:   Suppose B was there in the business for xx months. Then   A: B =76000×12:57000×x   Therefore,   76000×12:57000×x=2:1   76×12:57x=2:1   76×12×1=57x×2   76×4=19x×2   4×4=x×2   x=8   Hence B was there in the business for 8 months, or joined after   12-8= 
<gadget id="calculator">  12-8</gadget>
<output>4</output>
4 months   Answer: Option 4
<result>C</result>
A invested Rs 76000 in a business. After few months, B joined him with Rs 57000. The total profit was divided between them in the ratio 2 : 1 at the end of the year. After how many months did B join?