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An apartment building caretaker puts 650 ml of chlorine into the swimming pool every day. How many litres should he order to have one month's (30 days) supply on hand?

Sagot :

Given:

An apartment building caretaker puts 650 ml of chlorine into the swimming pool every day.

For 30 days the supply of chlorine the caretaker needs is,

[tex]\begin{gathered} 30\times650\text{ ml} \\ =19500\text{ ml} \end{gathered}[/tex]

In litres,

[tex]\frac{19500ml}{1000}=19.5\text{ litre}[/tex]

Answer: 19.5 litres