# The World Future Society predicts that by the year 2020, airplanes will be able to carry 1400 passengers. Today’s biggest jets can carry 600 passengers. What will be the percent of increase of airplane passengers?

Jan 21, 2017

The will be a 133.3% increase rounded to the nearest tenth.

#### Explanation:

The formula for calculate the rate or percentage of change across a period of time is:

$p = \frac{N - O}{O} \cdot 100$

Where:

$p$ is the percent change
$N$ is the New Value, 1400 for this problem
$O$ is the Old Value, 600 for this problem

Substituting and calculating for $p$ gives:

$p = \frac{1400 - 600}{600} \cdot 100$

$p = \frac{800}{600} \cdot 100$

$p = \frac{80000}{600}$

$p = 133.3$