an apartment complex contains 200 apartments , of these , x are 3-room apartments, and the others are 4-room apartments . how many rooms are

Question

an apartment complex contains 200 apartments , of these , x are 3-room apartments, and the others are 4-room apartments . how many rooms are there in the complex

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Hadley 1 week 2022-01-15T18:40:14+00:00 1 Answer 0 views 0

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    2022-01-15T18:42:01+00:00

    Answer:

    (800-x)\ rooms

    Step-by-step explanation:

    Let

    x —-> 3-room apartments

    200-x —-> 4-room apartments

    we know that

    To find out how many rooms are there in the complex, sum the number of 3-room apartments multiplied by 3 plus the number of 4-room apartments multiplied by 4

    so

    3x+4(200-x)

    Apply distributive property

    3x+800-4x

    Combine like terms

    (800-x)\ rooms

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45:7+7-4:2-5:5*4+35:2 =? ( )