Total water on Earth is represented by $100\text{ litres}$. If $97\text{ litres}$ are in oceans and $2…
Total water on Earth is represented by $100\text{ litres}$. If $97\text{ litres}$ are in oceans and $2.7\text{ litres}$ are locked in glaciers, how many millilitres of water are available as fresh, drinkable surface and ground water?
$300\text{ ml}$
$30\text{ ml}$
$3000\text{ ml}$
$3\text{ ml}$
Solution
Available fresh water is $100 - (97 + 2.7) = 0.3\text{ litres}$. Converting $0.3\text{ litres}$ to millilitres yields $0.3 \times 1000 = 300\text{ ml}$.