Question

a person purchased a shirt for 600 after a discount of 20% was offered on the Marked price of the shirt find the Marked price of the shirt

Answer 1

let mark price of the shirt is x
then
x-20%of x=600
or x-x*20/100=600
or x-x/5=600
or 4x/5=600
or x=600*5/4
or x=150*5
or x=750................(ans)

Answer 2

1. Let x be the marked price
2. 20%  is reduced on marked price i.e.,x-(20/100)x=600
3. On solving this we get x=750 which is original marked price.