A discount series of 10%, 20% and 40% is equivalent to a single discount of:
(a) 50%
(b) 56.8%
(c) 60%
(d) 70.28%
(e) None of these

• (b); Let original price=Rs. 100.
  Final price=90% of (80% of 60% of 100)
  =[(90/100)X(80/100)X(60/100)X100]=43.20.
  Therefore, Single discount=(100-43.20)%=56.8%
• 8 years agoHelpfull: Yes(11) No(0)
• (0.9*0.8*0.6)-1=56.8
• 7 years agoHelpfull: Yes(1) No(0)
• Answer
  (b) 56.8%
• 8 years agoHelpfull: Yes(0) No(0)
• answer is b 56.8%
• 5 years agoHelpfull: Yes(0) No(0)