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6 October, 13:17

Mattie has a rain barrel that holds 150 L of rainwater. She uses the rainwater from the barrel to water her plants. If she gives each plant in her garden 300 mL of water, how many plants can she water with a full rain barrel?

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  1. 6 October, 16:18
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    500 plants

    Step-by-step explanation:

    Total capacity of barrel = 150 L

    1 liter = 1000 mL

    Total capacity of barrel in mL = 150*1000 mL = 150,000 mL

    amount of water given to each plant by Mattie = 300 mL

    Let there be x plants

    Then, total amount of water given to x plant by Mattie = 300*x mL

    We know that full rain barrel has 150,000 mL

    so total amount of water given to x plant by Mattie should be equal to full rain barrel capacity.

    Substituting value of full rain barrel capacity and total amount of water given to x plant

    Mathematically it can be written as

    total amount of water given to x plant by Mattie = full rain barrel capacity

    300*x mL = 150,000 mL

    => x = 150,000/300 = 500

    Thus, 500 plants can she water with a full rain barrel.
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