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nikdorinn [45]
2 years ago
12

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

Mathematics
1 answer:
yarga [219]2 years ago
5 0

Answer:

A. 49

Step-by-step 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

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