A cow and a horse are bought for Rs 200000. The cow is sold at a profit of 20% and the horse is sold at a loss of 10% .The overall gaui is Rs 4000. The cost price of the cow is:

Ks 120000 ,Ks 80000, Rs 70000 Ks, 130000

• Let CP of cow be x
  CP of horse= 200000-x
  
  According to formula;
  
  SP of Cow= 100+20/100*x = 6x/5
  SP of Horse= 100-10/100*(200000-x) = 1800000-9x/10
  
  Total SP= 6x/5 + 1800000-9x/10 = 3x+1800000/10
  Total CP= 200000
  
  Gain= SP-CP
  = 3x+1800000/10 - 200000
  = 3x-200000
  
  In question,given; Gain= 4000
  
  => 3x-200000= 4000
  3x= 240000
  x= 80000
  
  
• 9 years agoHelpfull: Yes(11) No(0)
• Ks=80000
  use aligation rule u will get it easy. 4000 is 2% of 200000
  
  20 -10
  2
  
  12 18
  
  now cow cost price=(2/5)*200000=80000
• 9 years agoHelpfull: Yes(9) No(2)
• let cost price of cow=x and horse price=y
  x+y=2000000 -------(1)
  x*20/100+y*10/100=4000
  2x-y=40000 ----(2)
  solving 1 n 2 :x=80000
  
• 9 years agoHelpfull: Yes(5) No(1)