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# Need help with maths:( watch

1. The Heron Sea has a volume of 1.4x10^14 litres, of which 12% is salt.The Cobalt Sea has a volume of 8.5x 10^12 litres, of which 8% is salt.What is the percentage decrease in the volume of salt from the Heron Sea to the Cobalt Sea?Give your answer to 2 decimal places.
2. Volume of salt = total volume * (percent of which is salt/100)
Percentage decrease = (bigger volume/smaller volume) * 100 - 100

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Updated: October 29, 2015
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