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A single discount equivalent to three successive discounts
of 20%, 25% and 10% is
a) 55% b) 50% c)48% d)46%

plz specify the method... thanks

Answer Posted / sunil pradhan

Formula for 3 successive discount
A + B + C – (AB/100 + BC/100 + CA/100 – ABC/10000)
A = 20% B = 25% and C = 10%
Overall discount = 20 + 25 + 10 – (20×25/100 + 25×10/100 + 10×20/100 – 20×25×10/10000)
= 55 – (5 + 2.5 + 2 – 0.5)
= 55 – 9
= 46%
Option D

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