Kamal started a business with Rs.25000 and after 4 months, Kiran joined him with Rs.60000. Kamal received Rs.58000 including 10% of profit as commission for managing the business. What amount did Kiran receive? Choose the most appropriate option: A) 65000 B) 67000 C) 70000 D) 72000 E) 75000
Ratio of the profits of Kamal and Kiran   =25000×12:60000×8   =25×12:60×8   =5×3:12×2   =5:4×2   =5:8   Let the total profit =x   Then Kamal received 10x/100=x/10 as commission for managing the business.   Remaining profit =x−x/10=9x/10 which is shared in the ratio 5:8   Total amount received by Kamal =(x/10)+(9x/10)×(5/13)   ⇒(x/10)+(9x/10)×(5/13)=58000   ⇒x+9x(5/13)=580000   ⇒x(1+(45/13))=580000   ⇒x(58/13)=580000   ⇒x(1/13)=10000   ⇒x=130000   Kiran's share = 130000−58000=72000   Answer is 72000.
<result>D</result>
Kamal started a business with Rs.25000 and after 4 months, Kiran joined him with Rs.60000. Kamal received Rs.58000 including 10% of profit as commission for managing the business. What amount did Kiran receive?