WATER CALCULATIONS FOR LESSON 8 OF OPERATION WATER POLLUTION
1 tonne = 1000 kg
2.7 million tonnes x 1000 kg/1 tonne = 2 700 000 000 kg plastic for water bottles and, therefore, 2 700 000 000 kg PETs
2 700 000 000 kg PET x 17.5 kg water/1 kg PET = 47 250 000 000 kg water
47 250 000 000 kg water x 1 tonne/1000 kg = 47 250 000 tonnes water
5 511 556 lbs water in Olympic sized pool
5 511 556 lbs ÷ 1 kg/2.2 lbs = 2 505 252 kg water
2 505 252 kg water x 1 tonne/1000 kg = 2 505 tonnes water in Olympic sized pool
47 250 000 tonnes water ÷ 2 505 tonnes = 18 862 Olympic sized pools
1 year = 365 days 18 862 pools ÷ 365 days = 51.6 years