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

Question

asked Oct 28, 2022 220k views

1 Answer

Tomasz Kasperek · Answer 1 · 2022-11-01T13:26:41+0000

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