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hodyreva [135]
3 years ago
8

A population increased 13% up to 2,877. What was the population before the increase?

Mathematics
1 answer:
solmaris [256]3 years ago
8 0
113%  is equivalent to 2877
100% will be equivalent to;
\frac{100*2877}{113}
=2547
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Step-by-step explanation:

You can use "cross products" to solve any proportion. What looks like a "cross product" is just application of the multiplication property of equality. That property says the variable value is unchanged if both sides of the equation are multiplied by the same value.

For your fraction, the "cross product" is what you get when you multiply both sides of the equation by 500.

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