Question

Peter buys 32 books at the rate of 75 per book. He sold 18 books for 60 each and the remaining for * 80 each. Find his total gain% or loss%.​

Answer 1

According to the given condition cost of x books =Rs80

Therefore cost of each book =

x

80

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+4

80

According to Question,

x

80

−

x+4

80

=1

x(x+4)

80(x+4)−80x

=1

x

2

+20x−16x−320=0

(x−16)(x+20)=0

x=16orx=−20

Hence the shopkeeper brought 16 books

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Answer 2

Step-by-step explanation:

पीटर बॉयज है 32 बॉक्स एट द रेट ऑफ 75 इंची सोल्ड अट बुक फॉर रुपीस एंड द रिमेनिंग फॉर रूपीस इट इज फाइंड हिस टोटल गेम और लॉस परसेंट