Question

find the single discount which is equivalent to two successive discounts of 20%and 5%

Answer 1

mp = 100
1st discount = 20% of 100 = 20
since, 100 - 20 = 80
2nd discount = 5% if 80 = 4
sp = 80-4 = 76
Single Equivalent Discount  = MP - SP = 100 -76 = 24
Since,The discount of 24 is on 100
Required single discount  = 24%

Answer 2

please see the attachment.