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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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
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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