A starts a business with a capital of Rs. 85,000. B joins in the business with Rs.42500 after some time. For how much period does B join, if the profits at the end of the year are divided in the ratio of 3 : 1?
Choose the correct choice from the following answers
A) 5 months
B) 6 months
C) 7 months
D) 8 months
E) 9 months
Explanation:   Let B joined for x months. Then   85000×12:42500 × x = 3:1   ⇒850×12:425x=3:1   ⇒850×12×1=3×425x   Answer: Option 8 months   ⇒850×4=425x   ⇒x=8
<result>D</result>
A starts a business with a capital of Rs. 85,000. B joins in the business with Rs.42500 after some time. For how much period does B join, if the profits at the end of the year are divided in the ratio of 3 : 1?