Question

By what percent must the cost of goods be marked up so that even after a discount of 20% the same amount is realised as before the discount

Answer 1

let price be 100

let its marked up by x

so mp is 100+x

20% discount on 100+x = 100

100+x - 20 -x/5 = 100

4x/5 = 20

x = 25

% = 25/100 x100 = 25