Problem: By selling a horse for 450 a man loses 1/10of its cost price find the cost price of the horse?

Solution:

Understanding the problem:
To solve the problem, we need to understand the following:
- What is cost price?
- What is selling price?
- What is the loss percentage?
- How to calculate the cost price?

Cost price:
The cost price of a product is the amount paid to purchase the product.

Selling price:
The selling price of a product is the amount received by selling the product.

Loss percentage:
The loss percentage is the percentage of loss incurred while selling a product.

Calculating the cost price:
We can use the following formula to calculate the cost price of the horse:
Cost price = Selling price / (1 - Loss percentage)

Calculating the loss percentage:
From the problem, we know that the man loses 1/10 of the cost price. Therefore, the loss percentage can be calculated as follows:
Loss percentage = (1/10) * 100%
= 10%

Calculating the cost price:
We know that the selling price is 450. Therefore, we can use the formula mentioned above to calculate the cost price as follows:
Cost price = 450 / (1 - 10%)
= 450 / 0.9
= 500

Therefore, the cost price of the horse is 500.

Conclusion:
In this problem, we have learned how to calculate the cost price of a product when the selling price and loss percentage are given. We have also learned the importance of understanding the problem and using the correct formula to solve the problem.