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 12 : 1 ? Select:
A) 6 months B) 3 months C) 2 months D) 8 months E) 9 months
Suppose B joined for x months . Then, ( 85000 * 12 )/(42500 * x) = 12. or x = (85000 * 12) / (42500 * 12)= 
<gadget id="calculator">(85000 * 12) / (42500 * 12)</gadget>
<output>2</output>
2.   So, B joined for 2 months.   Answer: 2 months
<result>C</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 12 : 1 ?