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pychu [463]
4 years ago
13

When 80​% of a number is added to the​ number, the result is 216.

Mathematics
2 answers:
son4ous [18]4 years ago
5 0
I believe that the answer is 120.

Using this formula:


<span>x+0.8x=216 1.8x=216 x=120</span>
Troyanec [42]4 years ago
3 0
The number you are looking for is 120 and you can easily calculate it by solving the following equation with respect to x
x+0.8 x = 216
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An easy way to explain...
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it's very simple, 694-72= 622
so in order for you to check you answer you do the opposite
694-72 would equal 622
622+72 would equal 694
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