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4 September, 20:54

There are many toys in a kindergarten. The ratio of the number of dolls to the number of balls to the number of cars is 7:8:5. If the total number of dolls, balls, and cars is 80, then how many of each type of toy are there?

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  1. 4 September, 21:03
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    Number of Dolls = 28.

    Number of Balls = 32.

    Number of Cars = 20.

    Step-by-step explanation:

    Given the ratio of the number of dolls to the number of balls to the number of cars is 7 : 8 : 5.

    Suppose the highest common factor of the three numbers be 'X'.

    Then, Number of Dolls = 7x

    Number of Balls = 8x

    Number of Cars = 5x

    Given the total number of dolls, balls, and cars is 80.

    It means 7x + 8x + 5x = 80.

    20x = 80

    x = 80/20 = 4.

    So, Number of Dolls = 7*4 = 28.

    Number of Balls = 8*4 = 32.

    Number of Cars = 5*4 = 20.
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