A city has 3 new houses for every 7 old houses. If there are 21 new houses in the city, how many old houses are there A. 49 B. 47 C. 52 D. 51

Evan Jones asked Nov 26, 2022

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A city has 3 new houses for every 7 old houses. If there are 21 new houses in the city, how many old houses are there

A. 49
B. 47
C. 52
D. 51

Evan Jones asked Nov 26, 2022

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19 votes

Answer:

A. 49

Explanation:

ratio of houses is 3 new to 7 old

21 new is 7 times more than 3, so 7 will also be 7 times more

so, 21 to 49

I hope that made sense

Petar Ivanov answered Dec 1, 2022

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