Question

the shop declare a discount 20% and later a discount of 15% after first discount.Total diacount was?

Answer 1

total discount = (20/100) + { (1-20/100) ×15/100}
=0.2+(0.8×0.15) = 0.2 + 0.12 = 0.32 = 32%
hence total discount = 32%
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I hope this helps you...