Question

A man allows a discount of 10% on a book whose marked price is rupees 40. What is the cost price of the book so that the profit is 20%. ?.​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

let c.p of article=Rs.y

according to q.s=

y×120/100=40×90/100

=>y=40×90/120

=>y=30

Ans-is 30 Rs