In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Problem: a soft drink company had 6000 small and 15000 big bottles in storage . if 12 % of small 14 % of big bottles have been sold , then the total bottles remaining in storage is
Options: a ) 15360 , b ) 16010 , c ) 18180 , d ) 14930 , e ) 16075
c

Problem: when 1 / 20 % of 4,000 is subtracted from 1 / 10 of 4,000 , the difference is
Options: a ) 50 , b ) 200 , c ) 380 , d ) 398 , e ) 400
d

Problem: 4 , 6 , 12 , 14 , 28 , 30 , . . ?
Options: a ) 20 , b ) 40 , c ) no = 60 , d ) 80 , e ) 100
c