If the selling price of 320 Web Cameras is equal to the cost price of 400 Web Cameras, then the percentage profit is :
It is given,
320SP = 400CP
4SP = 5CP
Profit percentage = $$\ \frac{\ SP-CP}{CP}\times100=\ \frac{\ \frac{5CP}{4}-CP}{CP}\times100=25\%$$
The answer is option D.
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