Answer:
The value of x is 1000, it can be found through this equation:
.
Explanation:
1. Set up the problem.
Remember the basic procedure of calculating percentages. When we want to find 10% of any number, we have to multiply said number by 0.1, hence, we may write this problem as:

2. Solve the equation for x.

3. Express the result.
The value of x is 1000, it can be found through this equation:
.
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Other factors for percentages:
a) To find 25% of a number, we multiply the number by 0.25.
b) To find 5% of a number, we multiply the number by 0.05.
c) To find 120% of a number, we multiply the number by 1.20.