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27 June, 04:19

A city has 5 new houses for every 7 old houses. If there are 45 new houses in the city, how many old houses are there?

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  1. 27 June, 04:50
    0
    63

    Step-by-step explanation:

    Make a ratio:

    5 : 7 = 45 : x

    x = 63
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