Reported Question / Answer
option c rs.1800 rate of one fan = 200 rate of one computer = 400 rate of two computer + four fan = (2*400)+(4*200)=1600 rate of one computer + six fan = (1*400)+(6*200)=1600 rate of nine fan= 9*200=1800
Option. C. Correct answer... 2 computer - 800 4 fan - 800 Total = 1600 1 computer - 400 6 fan - 1200 Total = 1600 So fan rate 200 9 fan × 200 = 1800 answer
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