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: the sale price sarees listed for rs . 400 after successive discount is 30 % and 20 % is ? 
Options: a ) 297 , b ) 879 , c ) 342 , d ) 762 , e ) 224
[EX A]: e

[EX Q]: Problem: there is 60 lit of milk and water in which milk forms 84 % . howmuch water must be added to this solution to make it solution in which milk forms 64 % 
Options: a ) 18.75 , b ) 19.75 , c ) 20.75 , d ) 21.75 , e ) 22.75
[EX A]: a

[EX Q]: Problem: running at the same constant rate , 6 identical machines can produce a total of 330 bottles per minute . at this rate , how many bottles could 10 such machines produce in 4 minutes ? 
Options: a ) 648 , b ) 1800 , c ) 2200 , d ) 10800 , e ) 10900
[EX A]:
c