Cost of the apples is Xrs per kg if the weight is <= 30 kg and if the weight of the apples is more than 30 kgs then Y rs per kg for extra apples is charged if I pay 330 rs for 36 kgs and 345 rs for 39 kgs then how much money I should pay for 10 kgs apples

• for 36 kg:
  30x+6y=330
  for 39kg:
  30x+9y=345
  solving both
  we get y=5
  and x=10
  so for 10kg=10*10=100rs
  100rs is the ans
• 10 years agoHelpfull: Yes(23) No(0)
• rs 100.....c um payng 45 rs extra for 9 kgs ..so for 1 kg um payng 5 rs xtra .....thrfor , the price of 30 kgs appl is 300rs ..so, by unitary method the price of 10 kgs of appls is 100 rs...
  
• 10 years agoHelpfull: Yes(1) No(0)
• For 36 kg,
  30x+6y=330......(1)
  for 39 kg,
  30x+9y=339.......(2)
  by solving it, we get x=10.4rs/kg and y=3rs/kg
  so,for 10 kg price will be 104rs
• 10 years agoHelpfull: Yes(0) No(6)
• let 30kg is y
  Then we will get a equation of 30x+6y=330 and 30x+9y=345
  so by solving both the equations, x=10 and y=5
  so we want for 10kg apples as it is
• 10 years agoHelpfull: Yes(0) No(0)
• 36kg =345 & 39kg=330
  
  39kg-36kg=3kg (after 30 kg)
  therefore 345-330=15 rs
  
  15+15 =30 for 3kg+3kg=6kg
  330-30=300 for 30kg
  
  300/10=100rs for 10kg
  
  
• 9 years agoHelpfull: Yes(0) No(0)