In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[EX Q]: Problem: ravi and kavi start a business by investing â ‚ ¹ 6000 and â ‚ ¹ 72000 , respectively . find the ratio of their profits at the end of year . 
Options: a ) 2 : 12 , b ) 5 : 12 , c ) 7 : 12 , d ) 1 : 12 , e ) 3 : 12
[EX A]: d

[EX Q]: Problem: a sum of money at simple interest amounts to rs . 2240 in 2 years and to rs . 2600 in 5 years . the sum is : 
Options: a ) rs . 1500 , b ) rs . 2000 , c ) rs . 1000 , d ) rs . 1200 , e ) rs . 1800
[EX A]: b

[EX Q]: Problem: a , b and c invests rs . 2000 , rs . 3000 and rs . 4000 in a business . after two year a removed his money ; b and c continued the business for one more year . if the net profit after 3 years be rs . 4800 , then a ' s share in the profit is ? 
Options: a ) 600 , b ) 400 , c ) 678 , d ) 867 , e ) 768
[EX A]:
e