Question

by allowing 20% off discount on printed price A shopkeeper earns 20% on a certain article if the cost price of the article is 1500 what is the printed price

Answer 1

let the price at which he sold be 100x
therefore. 1500+20%of 1500=100x

find out the sp

then let the printed price be 100z
100z-20%of 100z=100x(placing the value)

find out 100z

that's all bro!!