If 25% of a certain number is 1600, what is 10% of the number?
- 640
- 40
- 1400
- 400
Explanation
If 25% of a certain number is 1600, we can set up an equation:
25% of x = 1600
Convert the percentage to a decimal:
0.25x = 1600
Divide both sides by 0.25:
x = 1600 / 0.25
x = 6400
So, the certain number is 6400.
Now, we need to find 10% of 6400:
10% of 6400 = 0.10 x 6400 = 640
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