Math, asked by mistipatel89, 10 hours ago

the selling price of 18 books is equal to the cost price of 21 books.find the gain or loss percent??
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Answers

Answered by dhairya7963
2

Answer:

Let Cost Price per book = 1

Cost of 15 books = 15

15 is obtained by selling 18 books

So Selling Price per book = 15 / 18

CP - SP = Loss

= 1 − 15 / 18

= 1 / 6

Percentage = 1 / 6 ∗ 100

= 16 2/3 % Loss

Answered by shakshibhaskar006
2

Answer:

Explanation:

Let Cost Price per book = 1

Cost of 15 books = 15

15 is obtained by selling 18 books

So Selling Price per book = 15 / 18

CP - SP = Loss

= 1 − 15 / 18

= 1 / 6

Percentage = 1 / 6 ∗ 100

= 16 2/3 % Loss

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