Question

a shopkeeper buys some books for rs 80.if he buys 4more books at this price wht is the price for one book if it is 1 less for each

Answer 1

Answer: 16 books

Step-by-step explanation:

Let the number of books purchased for Rs.80 = x

Then cost of each books = 80/x

If he buys for more books, the number of books = x+4

Cost of each book = 80/x+4

(80/x)-[80/(x+4)]=1

Solve x=-20 and x = 16

Rejecting x = -20

The number of books purchased = 16

PLS PLS PLS MARK ME BRAINLIEST IF ANSWER IS HELPFUL

Answer 2

let price of each book is X

number of books = 80/X

ATQ

80/(X-1) = 80/X +4

{80/(X-1)} - (80/X) =4

80X- 80X+80 = 4(x^2-X)

X^2-2X=20

X^2-X-20=0

X^2- 5X+4X-20=0

X(X-5) +4(X-5)

(X+4)(X-5)

X=5

So price of each book is 5 rupees .