A pencil cost rs .25,a pen cost rs 10 and a book cost rs25.how many each,one should buy so that the total no. of articles is 100and total amount 1000rs

• 0.25x + 10y + 25z = 1000 or (x + 40y + 100z) = 4000 ....(1)
  x + y + z = 100 .......(2)
  
  (1) - (2) => 39y + 99z = 3900 => 13y + 33z = 1300
  (y , z ) = (1,39),(34,26)
  
  => (x,y,z) = (60,1,39) and (40,34,26)
  
  
• 11 years agoHelpfull: Yes(4) No(0)
• pencil=60
  pen=1
  book=39
  total=60*0.25+1*10+39*25=1000
• 11 years agoHelpfull: Yes(0) No(1)
• penc 100=4000
  pen 100 =1000
  book 100=2500
  10*30=300
  25*11=275
  .25*59=425
• 11 years agoHelpfull: Yes(0) No(0)