Question

a shopkeeper buys an article whose list price is rs 450 at some rate of discount from a wholesaler. He sells the article to a consumer at the list price and charges VAT at the rate of 6%.If the shopkeeper has to pay a VAT of rs 2.70, find the rate od discount at which he bought the article from the wholesaler

Answer 1

MP = 800
let the discount be y
CP = 800-y

Now
SP = 800
profit= 800-(800-y)= y
Now 
tax % = 7.5%
ATQ
the VAT paid by the shopkeeper=6
(7.5/100) y = 6
y= 80

the discount = 80