If the selling price is doubled,the profit triples.The profit percent is?
a)66+1/3 %
b)150%
c)100%
d)90%

• Let the C.P. be x and the S.P. be y
  
  So the profit is (y - x) ---------------------------- (1)
  
  Now, the S.P. is doubled. So the new S.P. = 2y
  
  The new profit = (2y - x)
  
  Given that when S.P. is doubled, profit increases 3 times
  
  => New profit = 3 * old profit
  
  => (2y - x) = 3(y - x)
  
  => y = 2x
  
  So, the profit = (y - x) = (2x - x) = x
  
  % profit = (x/x∗100)% = 100%
• 7 years agoHelpfull: Yes(5) No(0)
• Let C.P. be Rs. x and S.P. be Rs. y.
  
  Then, 3(y - x) = (2y - x)
  
  Therefore, y = 2x.
  
  Profit = Rs. (y - x) = Rs. (2x - x) = Rs. x.
  
  Profit % = (x/x)*100 = 100%
• 6 years agoHelpfull: Yes(2) No(0)