Multiple choice

Cost price of 28 articles is equal to selling price of 21 articles. Calculate the profit percentage.

  1. 12%

  2. 33⅓%

  3. 20%

  4. 22%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

CP of 28 = SP of 21. Let CP of 1 be 1. Then 28 = 21 * SP, so SP = 28/21 = 4/3. Profit = SP - CP = 4/3 - 1 = 1/3. Profit percentage = (1/3) * 100 = 33.33%.

AI explanation

The profit percentage formula is (((selling price minus cost price) divided by cost price) multiplied by 100). Let the cost price of one article be 1, making the total cost price of 28 articles equal to 28; this equals the selling price of 21 articles, so the selling price of one article is 28 divided by 21, or 4 divided by 3. The profit is (4 divided by 3) minus 1, which equals 1 divided by 3. Applying the formula gives ((1 divided by 3) divided by 1) multiplied by 100, resulting in a profit percentage of 33 and one third percent.

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