A tank with a capacity of 1200 l was 1/10 filled with water at first. Then, Tony turned on the tap to add more water to the tank. The line graph below shows the volume of water in the tank over 12 minutes after the tap was turned on.

  1. (a)

    What was the volume of the water in the tank at first?

  2. (b)

    What was the volume of water in the tank after 18 minutes?

Relating integer division and fractions中文
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Worked solution

7(a)

1. Calculate the initial volume of water in the tank

110×1200=120\frac{1}{10} \times 1200 = 120

Answer

120 l120\text{ l}

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