.A cow and a horse are bought for Rs.200000. The cow is sold at a profit of20% and the horse is sold at a loss of 10%. The overall gain is Rs. 4000.The cost pric of the cow is:
a.Rs 130000
b.Rs 80000
c.Rs 70000
d.Rs 120000

• c+h=200000
  1.2c+0 c.9h=204000
  by solving it we get cp of cow as 80000
• 11 years agoHelpfull: Yes(47) No(6)
• let cost of cow be x
  let cost of horse be 200000-x
  so, (120%)x-(90%)(200000-x)=204000
  solve the above equation vil get x=80000
  thus cost price of cow is 80000/-
• 11 years agoHelpfull: Yes(22) No(4)
• c+h=200000
  0.2c-0.1h=4000
  solving these two we get c= 80000 and h=120000
• 11 years agoHelpfull: Yes(17) No(2)
• solve this kinda question using allegation. the most effective and the fastest way...!!
  gain=4000
  gain %= 400000/200000=2
  cow horse
  20 -10
  2
  12 18
  cost of cow:cost of horse=12:18
  =2:3
  therefore cost of cow=2/5*200000=80000
  
• 11 years agoHelpfull: Yes(14) No(3)
• Ans: Rs.80,000
  
  soln: go from options.
  take cow cost as Rs.80000(option)
  thn horse cost will be 1,20,000(2,00,000-80,000=1,20,000)
  cow sold profit is 20%.
  therefore 80,000 of 20% is Rs.16,000(80,000*(20/100)=16,000)
  horse sold at a loss of 10%.
  therefore 1,20,000 of 10% is Rs.12,000(1,20,000*(10/100)=12,000)
  cow profit-horse loss=>16,000-12,000=4,000.
  Rs.4000,which is the over all gain.
  check it for other options we will not get overall gain of 4000Rs.
  
  Understand the logic
• 11 years agoHelpfull: Yes(8) No(4)
• use allegations method to solve this type of question
  
  first calculate overall gain in percentage = 4000 / 200000 = 2 %
  
  .....cow.............horse ...
  .....(+20%).............(-10%)...
  ...................(+2%).............. use allegation
  ___________________________________
  ....(+12%)...............(18%)......
  
  
  for cost price of cow is ______[ (12) / (12+18) ] * 200000 = (2/5)*200000 = 80000 ans .......... :)
  
  
• 9 years agoHelpfull: Yes(8) No(1)
• let assume that cost of the cow is x and horse is y then
  given that x+y=200000 and
  (1+0.2)x+(1-0.1)y=200000+4000=204000
  by solving above equations we will get x=80000 and y=120000.
  
• 9 years agoHelpfull: Yes(5) No(0)
• x+y=200000
  1.2x+0.9y=204000
  solving this x=80000
• 9 years agoHelpfull: Yes(2) No(1)
• let cost of horse be x
  let cost of cow be 200000-x
  den gain = 0.2(200000-x)-0.1x=4000
  x=1,20,000
  cow cost =80,000
  x=1
  
• 9 years agoHelpfull: Yes(2) No(0)
• x=cost of cow and y=cost of horse
  then, x+y=200000
  (x+20% of x)+(y-10% of y)=204000
  solving the above equations we get x=80,000
• 8 years agoHelpfull: Yes(2) No(0)
• since overall gain is 4000 so total SP= 200000+4000=204000
  by forming equation,
  1.2x+0.9(200000-x)=SP
  Hence answer is 80000
• 9 years agoHelpfull: Yes(1) No(1)
• Overall profit = 4000200000×100=2%
  By applying alligation rule, we get
  
  
  
  So cost price of the cow = 2/5 x 200000 = 80,000
• 9 years agoHelpfull: Yes(1) No(0)
• X*1.2+(20000-X).9 -200000=4000 x=80000 i used formula gain=s.p-c.p
• 8 years agoHelpfull: Yes(1) No(0)
• b.Rs 80000 bcoz cow profit (80000*20)/100=16000 and horse loss is (120000*10)/100=12000 so 200000+16000-12000=204000
• 8 years agoHelpfull: Yes(0) No(0)
• Ans B 80000
  let cow cp x
  let horse cp 200000-x
  then (120%of x ) - (90%of (200000-x)=200000+4000
  ((120/100)*x)- (90/100)*(200000-x)=204000
  then u will get cp of cow = 80000
• 8 years agoHelpfull: Yes(0) No(0)
• Profit = 4000
  Profit =SP - CP
  4200=SP - 200000 therefore SP=204000
  x+y = 200000
  1.2x + 0.9y = 204000
  Solving for x = 80000 = CP of cow.
  
  
• 8 years agoHelpfull: Yes(0) No(0)
• (X*20)/100-(2000000-X)*10/100=4000
  by solving it we get x=80000
• 8 years agoHelpfull: Yes(0) No(0)
• Let the c.p of cow be "c", Then c.p of horse will be 200000-c
  s.p of cow is (120/100)*c
  s.p of horse is (90/100)*(200000-c)
  s.p-c.p=gain, so => (120/100)*c + (90/100)*(200000-c) - 200000 = 4000
  1.2 c + 180000 - .9 c - 200000 = 4000
  .3 c = 24000
  => c = 80000.
  So the cost price of the cow is Rs. 80000.
  
• 8 years agoHelpfull: Yes(0) No(0)
• c+h=200000
  gain=4000
  c=120%
  h=90%
  (120)x-(90)(200000-x)=8000
• 4 years agoHelpfull: Yes(0) No(0)
• Let c=x, w=2,00,000-x
  SP-CP=gain
  [1.2x+(2,00,000-x)*0.9]-2,00000=4000
  x=80000
• 4 years agoHelpfull: Yes(0) No(0)
• It may be either 21 or 42
• 3 years agoHelpfull: Yes(0) No(0)