In a village consisting of p persons, x% can read and write. Of the males, only y% can read and write. Of the females, only z% can read and write. If x, y > z, then what is the number of males in the village?
- A. p(x - z)/(y - z) ✓
- B. p(y - z)/(x - z)
- C. px/y
- D. py/x
Correct Answer: A. p(x - z)/(y - z)
Explanation
Let M be the number of males. Females = p - M. Total readers = \frac{My}{100} + \frac{(p-M)z}{100} = \frac{px}{100}. Solving for M gives My - Mz = px - pz, so M = \frac{p(x-z)}{y-z}.
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