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 options.
A) 8	B) 7	C) 9	D) 6	E) 5
Let B joined for x months. Then   85000×12:42500×(x)=3:1   ⇒850×12:425x=3:1   ⇒850×12×1=3×425x   ⇒850×4=425x   ⇒x=8   8nswer is 8.
<result>A</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?