marked price of a watch was 720.a man bought the same for 550.80.after getting two successive discounts,the first at 10%.what was the second discount rate?

• Second discount=15%
  After 1st discount of 10% price=0.9*720=648
  After 2nd discount it reduces to 550.80
  550.80 is [550.80*100/648=85]% of 648
  So % of 2nd discount=100-85=15
• 11 years agoHelpfull: Yes(2) No(0)
• Second discount is 6.6%
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• 15% a discount of10%on 720.. this implies new marked price is 648. now 648s x percent is 550.80
  or 648*x/100=550.80... x=85 implies 15% discount
• 11 years agoHelpfull: Yes(0) No(0)
• 1st discount is 10%
  so after 1st dis. cost is 720-720*10/100
  648-648*x/100=550.80
  x=15
  hence 2nd dis. is of 15%
• 11 years agoHelpfull: Yes(0) No(0)