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2 May, 13:27

Jean poured water into a rectangular tank at the right until is was 2/3 full. Then she poured some of the water out until it was 2/5 full. How much water did she pour out of the tank? Give your answer in millimeters.

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Answers (2)
  1. 2 May, 13:53
    0
    Jean poured 4/15 of the contents of the water out which is the equivalent of 267 milliliters (assuming the size of the tank is 1 liter)

    Step-by-step explanation:

    Let's assume the Tank size is 1 liter

    Jean filled the tank 2/3 full

    2/3 = 0.667

    Jean reduced the water level to 2/5 full

    2/5 = 0.40

    Jean poured 0.667 minus 0.40 water out of the tank = 0.267

    0.267 = 4/15

    0.267 of 1 liter = 0.267 x 1000 = 267 Milliliters
  2. 2 May, 17:16
    0
    The amount of water she poured out of the tank is 27,000 m³.

    Step-by-step explanation:

    To answer the question, we take the dimensions of the tank as

    Width = 0.5 m

    Length = 0.2 m

    Height = 1 m

    Therefore, if the tank was was filled to 2/3 of the volume, then we have

    Volume of water in the tank = 2/3 * 0.5 m * 0.2 m * 1 m

    = 0.067 m³

    She then poured out water until the tank was 2/5 full. That is

    2/5 * 0.5 m * 0.2 m * 1 m = 0.04 m³

    Therefore, the amount of water she poured out of the tank is

    0.067 m³ - 0.04 m³ = 0.027 m³

    However, 1 m³ = 1 * 10⁶ mm³

    Therefore 0.027 m³ = 27,000 mm³

    The amount of water she poured out of the tank = 27,000 m³.
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