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: what annual payment will discharge a debt of rs . 1030 due in 2 years at the rate of 5 % compound interest ? 
Options: a ) 553.94 , b ) 551.25 , c ) 534.33 , d ) 543.33 , e ) 646.33
[EX A]: a

[EX Q]: Problem: if a and b get profits of rs . 18,000 and rs . 15,000 respectively at the end of year then ratio of their investments are 
Options: a ) 6 : 5 , b ) 1 : 4 , c ) 3 : 2 , d ) 2 : 3 , e ) 2 : 5
[EX A]: a

[EX Q]: Problem: a man ' s speed with the current is 22 km / hr and the speed of the current is 5 km / hr . the man ' s speed against the current is 
Options: a ) 9 , b ) 10 , c ) 11 , d ) 12 , e ) 13
[EX A]:
d