Krishan and Nandan jointly started a business. Krishan invested three times as Nandan did and invested his money for fourtime as compared to Nandan. Nandan earned Rs. 4000. If the gain is proportional to the money invested and the time for which the money is invested and the total gain was  Choose the correct option:  A) Rs.32000  B) Rs.62000  C) Rs.42000  D) Rs.52000  E) Rs.22000
3:1   4:1   ------   12:1   1 ----- 4000   13 ----- ? =&gt; Rs.52,000   Answer: Rs.52000
<result>D</result>
Krishan and Nandan jointly started a business. Krishan invested three times as Nandan did and invested his money for fourtime as compared to Nandan. Nandan earned Rs. 4000. If the gain is proportional to the money invested and the time for which the money is invested and the total gain was