A milkman has $20$ liters of milk. If he mixes $5$ liters of water, which is freely available, in $20$ liters of pure milk and sells the mixture at the cost price of pure milk, then the profit percentage is:
Options:
- A: $25%$
- B: $20%$
- C: $15%$
- D: $30%$
Related Practice Questions:
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