Question

A book with the cost price 'A' is sold at a market price 'B' which is 50% higher than the cost price 'A'. If shopkeeper sells the book at a price 'C' with a discount on 'B', he still gets a profit of 20%.What is the discount percentage a) 20 b)30 c)10 d)40

Answer 1

Answer:

30

Step-by-step explanation:

let the cost price 'A' be x

then the the market price 'B' will be

(1+(50/100))x or x+(50/100)x =(150/100)x

if he still makes a profit of 20%

then selling price'C' will be 20% more then the cost price i.e.

x+(20/100)x =(120/100)x.

So, discount will be market price 'B' - selling price 'C'

= (150/100)x - (120/100)x

=(30/100)x

i.e. 30%

note:- u can 100 as cost price for simpler understanding.