SOLUTION: The U.S. Weather Bureau has a station on Mauna Loa in Hawaii that has measured carbon dioxide levels since 1959. At that time, there were 328 parts per million of carbon dioxide in

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Question 1083454: The U.S. Weather Bureau has a station on Mauna Loa in Hawaii that has measured carbon dioxide levels since 1959. At that time, there were 328 parts per million of carbon dioxide in the atmosphere. In 2017, the figure is 414 parts per million. Find the increase in carbon dioxide levels and the percent of increase, to the nearest tenth of a percent.
Increase carbon dioxide levels:_____ parts per million
Percent increase:______%
Answer by Theo(13342) About Me  (Show Source):
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there were 328 parts per million of carbon dioxide in the atmosphere in 1959.

there are 414 parts per million of carbon dioxide in the atmosphere in 2017.

the increase is 414 - 328 = 86 parts per million.

the ratio of the increase to the amount in 1959 is 86 / 328 = .262.

the percent increase is 100 times that and is equal to 26.2%.