calebetienne77 calebetienne77

14-09-2017
Mathematics

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A city has 5 new houses for every 9 old houses. If there are 45 new houses in the city, how many old houses are there?

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choixongdong choixongdong

14-09-2017

5 new houses for every 9 old houses

5 new houses x 9 = 45 new houses
9 old houses x 9 = 81 old houses

answer
81 old houses are there if there are 45 new houses in the city

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