A dishonest milkman buys milk at Rs.6 per litre and adds one third of water to it and sells the mixture at Rs.7.20 per litre. The gain is
[A] 15%
[C] 40%
[B] 60%
[D] 25%

• 1*6 = 6 rs/litre
  1.33* 7.20 =9.6 rs/litre
  {(9.6-6)/6}* 100 = 60 %
• 10 years agoHelpfull: Yes(14) No(3)
• 1litre=6rs.
  1+(1/3)litre=6rs.
  therefore 1.33litre=6rs.
  
  Sp of 1litre milk=7.20rs
  therefore,
  Sp of 1.33litre milk= 1.33 litre milk*7.20rs.=9.6rs/litre.
  gain=sp-cp=9.6-6=3.6rs.
  Gain%=gain*100/cp.
  =3.6*100/6=60%.
  
  
  
• 8 years agoHelpfull: Yes(3) No(0)
• lets x ltr milk
  total cost of milk 6x
  after mix the water, quantity of milk x+(x/3)
  total cost of milk ( x+(x/3))*7.20 is 28.8x/3
  gain is {( 28.8x/3 - 6x)/6x}*100 equal to 60%
  
  
• 7 years agoHelpfull: Yes(2) No(0)
• can u please explain briefly
• 9 years agoHelpfull: Yes(1) No(1)
• 1 1/5
  30 0
  
  x
  x 30 - x
  
  ( 30 - x ) / x = 1/5 ==> x = 25 ==> Profit % = 7/25 * 100 = 28 %
• 7 years agoHelpfull: Yes(0) No(0)
• Cost price of 3 litre milk=Rs.18
  Cost price of 4 litre milk=Rs.18
  Selling price of 4 litre milk=Rs. 28.80
  Profit=10.80
  Profit percentage=60
• 5 years agoHelpfull: Yes(0) No(0)