Question

a shopkeeper purchase a book for 80 Ruppees .If he had bought 4 more books for the same amount each book would have cost 1 ₹ less . Find the no. of books he bought

Whosoever answering this question kindly...Find the Ans by solving it with Two variables...​

Answer 1

Step-by-step explanation:

Let the shopkeeper buy x number of books. 

According to the given condition cost of x books =Rs80

Therefore cost of each book =x80

Again when he had brought 4 more books

Then total books in this case =x+4

So cost of each book in this case =x+480

According to Question, 

x80−x+480=1

x(x+4)80(x+4)−80x=1

x2+20x−16x−320=0

(x−16)(x+20)=0

x=16orx=−20

Answer 2

Answer:

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