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: ? % of 360 = 108.0 
Options: a ) 277 , b ) 36 , c ) 64 , d ) 72 , e ) 30
[EX A]: e

[EX Q]: Problem: running at the same constant rate , 6 identical machines can produce a total of 270 bottles per minute . at this rate , how many bottles could 8 such machines produce in 4 minutes ? 
Options: a ) 648 , b ) 1800 , c ) 2700 , d ) 1440 , e ) none of these
[EX A]: d

[EX Q]: Problem: find the compound interest on $ 1200 for 3 years at 20 % p . a . if ci is component yearly ? 
Options: a ) $ 120 , b ) $ 150 , c ) $ 874 , d ) $ 250 , e ) $ 300
[EX A]:
c