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How do I calculate level of co2?

The World Meteorological Association recorded carbon dioxide levels of 405 ppm in 2017.
This is an increase of 46% since 1817.

Calculate level of carbon dioxide

Reply 1

Kallisto

Entertainment Forum Helper

Original post by zarahh09

The World Meteorological Association recorded carbon dioxide levels of 405 ppm in 2017.
This is an increase of 46% since 1817.

Calculate level of carbon dioxide

Sounds like percentage calculation. The percentage and the whole is given, the part is asked, so:

percentage = (parts * 100) / whole

parts = percentage * whole / 100

That is everything.

Reply 2

zarahh09

Original post by Kallisto

Sounds like percentage calculation. The percentage and the whole is given, the part is asked, so:

percentage = (parts * 100) / whole

parts = percentage * whole / 100

That is everything.

so
46/100=0.46
or
46x100/405=11.35

Reply 3

Kallisto

Entertainment Forum Helper

Original post by zarahh09

so
46/100=0.46
or
46x100/405=11.35

Try to calculate percentage multiply by the whole first and last but not least divide it by 100. Or divide percentage by 100 first and then multiply by the whole.