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 true discount on a bill due 9 months hence at 16 % per annum is rs . 150 . the amount of the bill is 
Options: a ) 1200 , b ) 1764 , c ) 1400 , d ) 1354 , e ) none of these
[EX A]: c

[EX Q]: Problem: if leo gains 10 pounds , he will weigh 50 % more than his sister kendra . currently their combined weight is 160 pounds . what is leo ' s current weight ? 
Options: a ) 80 , b ) 86 , c ) 92 , d ) 98 , e ) 104
[EX A]: c

[EX Q]: Problem: running at the same constant rate , 100 identical machines can produce a total of 500 coffee bar per minute . at this rate , how many bottles could 20 such machines produce in 2 minutes ? 
Options: a ) 110 , b ) 220 , c ) 330 , d ) 200 , e ) 789
[EX A]:
d