The cost price of y articles is equal to selling price of z articles. If y:z=5:4, what is the profit percentage?

  1. A. 20%
  2. B. 25%
  3. C. 30%
  4. D. 40%

Correct Answer: B. 25%

Explanation

Since y \times CP = z \times SP, we have \frac{SP}{CP} = \frac{y}{z} = \frac{5}{4}. Profit is 5 - 4 = 1 unit on a CP of 4, which translates to \frac{1}{4} \times 100\% = 25\%.

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