A book is listed at Rs. 2,400 and the discount offered is 10%. What additional discount must be given to bring the net selling price Rs. 1,800?
Marked price = Rs. 2,400 After 1st discount = 90/100 × 2400 = 2160 Selling price = Rs. 1,800 Additional discount % = (2160-1800)/2160 × 100 = 360/2160 × 100 = 16*2/3%
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