A doll is solid for RS 220 What was the cost of doll if rate of profit was 10% of cost?

Answer: 200

To find the cost of the doll when it is sold for Rs. 220 with a profit rate of 10%, we can use the following formula:

$Selling Price = Cost Price + Profit$

Given that the profit is 10% of the cost price, we can express the profit as:

$Profit = 0.10 \times Cost Price$

Let the cost price be $C$ . Therefore, the selling price can be expressed as:

$Selling Price = C + 0.10 C = 1.10 C$

We know the selling price is Rs. 220, so we can set up the equation:

$1.10 C = 220$

Now, we can solve for $C$ :

$C = \frac{220}{1.10} = 200$

Thus, the cost of the doll was Rs. 200.

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