If the cost price of 20 books is equal to the selling price of 16 books, then what is the profit percentage?

0  Views: 390 Answers: 2 Posted: 7 years ago

16 is to 20 as x is to 100.
16/20 = x/100
If each book cost \$5 to buy, 20 books would cost \$100.  If you sold 16 books for the cost of 20, you would sell 16 books for \$100.  16 books would have cost YOU \$80 (16 x 5).  That gives you a profit of  \$20.
20/100 = .20 = 20%
If each book cost \$4 to buy, 20 books would cost you \$80.  You would sell 16 for \$80 (which would have cost you \$64 (16 x 4).  Your profit would be 80 - 64 = \$16.  16/80 = .20 = 20%
Play with it like that... You'll always come up with 20% profit.

meserie

right.

Surely the point is that we are buying 20 books for the same price we are selling 16 of that at.

If you buy the books at £1.00 each = £20, and If we sell 16 of the books to achieve an income of £20 them we sell them at £1.25. The answer is nil.   The questioner does not ask about any potential profit from the 4 unsold books which would give him a profit of 25% if he sold them.

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