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'.

[Q]: Problem: calculate how many seconds it will take for 4 bells to toll together again , given that they begin to toll together respectively at the intervals of 9 , 10 , 14 and 18 seconds . ?
Options: a ) 636 , b ) 631 , c ) 633 , d ) 610 , e ) 630
[A]: e

[Q]: Problem: the sale price sarees listed for rs . 495 after successive discount is 15 % and 10 % is ?
Options: a ) 288 , b ) 378 , c ) 342 , d ) 662 , e ) 262
[A]: b

[Q]: Problem: one fourth of a solution that was 10 % sugar by weight was replaced by a second solution resulting in a solution that was 14 percent sugar by weight . the second solution was what percent sugar by weight ?
Options: a ) 74 % , b ) 64 % , c ) 42 % , d ) 28 % , e ) 26 %
[A]:
e