A man gains 20% by selling an article for a certain price. If he sells it at double the price, the percentage of profit will be
a. 40
b. 100
c. 120
d. 140

• In the initial case say S.P be x r.s. than profit is 20%
  sp=(100+profit/100)*cp
  100x=120cp
  cp=5x/6 --------------------------------eq 1
  now sp is doubled say 2x
  2x=(100+p/100)*cp
  2x=(100+p/100)*5x/6
  solving we have p=140
• 7 years agoHelpfull: Yes(0) No(0)
• Let the C.P. = x,
  Then S.P. = (120/100)x = 6x/5
  New S.P. = 2(6x/5) = 12x/5
  
  Profit = 12x/5 - x = 7x/5
  
  Profit% = (Profit/C.P.) * 100
  (7x/5) * (1/x) * 100 = 140 %
  so the option is d 140%
• 6 years agoHelpfull: Yes(0) No(0)
• Let the C.P. = x,
  Then S.P. = (120/100)x = 6x/5
  New S.P. = 2(6x/5) = 12x/5
  
  Profit = 12x/5 - x = 7x/5
  
  Profit% = (Profit/C.P.) * 100
  => (7x/5) * (1/x) * 100 = 140 %
• 5 years agoHelpfull: Yes(0) No(0)