What is the percent of increase from 50 to 90?

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What is the percent of increase from 50 to 90?

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Answer 1 · 2017-03-07T23:24:39

See the entire solution process and result below:

Explanation:

The formula for calculating the percentage or rate of change between two values is:

$p = \frac{N - O}{O} \cdot 100$ $p = (N - O)/O * 100$

Where:

$p$ $p$ is the percent change - what we are solving for in this problem
$N$ $N$ is the New Value - 90 for this problem
$O$ $O$ is the Old Value - 50 for this problem

Substituting and solving for $p$ $p$ gives:

$p = \frac{90 - 50}{50} \cdot 100$ $p = (90 - 50)/50 * 100$

$p = \frac{40}{50} \cdot 100$ $p = 40/50 * 100$

$p = \frac{4000}{50}$ $p = 4000/50$

$p = 80$ $p = 80$

There was an 80% increase.

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What is the percent of increase from 50 to 90?

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