Correct Answer: Option A

Explanation

To find the cost price

Selling price = ₦600; Profit = 50% 

Multiply the selling price by 100 and add 100% to the profit

new selling price = 600 x 100 = 60,000, new profit = 150%

Cost price =  = \(\frac{60,000}{150}\) = ₦400

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