Explanation:

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Verified answer

Answer:

To find the cost price of the toy, we can use the formula:

Cost Price = Selling Price / (1 + (Profit Percentage / 100))

Given that the selling price is 400 and the profit percentage is 100/9 percent, we can substitute these values into the formula:

Cost Price = 400 / (1 + (100/9) / 100)

Simplifying further:

Cost Price = 400 / (1 + 100/900)

Cost Price = 400 / (1 + 1/9)

To add the fractions, we need a common denominator of 9:

Cost Price = 400 / (9/9 + 1/9)

Cost Price = 400 / (10/9)

To divide by a fraction, we can multiply by its reciprocal:

Cost Price = 400 * (9/10)

Cost Price = 360

Therefore, the cost price of the toy is 360.

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