After allowing a discount of 20% on the marked price of a lamp, a trader loses 10%. By what percentage is the marked price above the cost price?
Given,
Discount = 20%
S.P. = …(i)
And trader lose is 10%
…(ii)
We have to find out % of marked price above cost price
=
=
=
% of marked price above cost price = 12.5%