A began a business with Rs. 85,000. He was joined afterwards by B with Ks. 42,500. 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 one.
A) 2	B) 1	C) 7	D) 8	E) 9
Explanation:   Suppose B joined for x months . Then, ( 85000 * 12 )/(42500 * x) = 3. or x = (85000 * 12) / (42500 * 3)= 
<gadget id="calculator">(85000 * 12) / (42500 * 3)</gadget>
<output>8</output>
8.   So, B joined for 8 months.   Answer: 8) 8 months
<result>D</result>
A began a business with Rs. 85,000. He was joined afterwards by B with Ks. 42,500. For how much period does B join, if the profits at the end of the year are divided in the ratio of 3 : 1 ?