1.

A discount series of 10 20 and 40 is equivalent to a single discount of

Answer»

3 discount of 10,20,40% discount

we will find net EFFECTIVE discount by :
net effective discount = a+b-ab/100

Case-I 20&40% discount FIRST,,,

net discount = 20+40-(20x40)/100 = 52%

Case -II

& now effective discount of 52% and 10% is
= 52+10+(52x10)/100
= 62- 5.2%
= 56.8%


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