Question

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.
52
B.
49
C.
51
D.
47

Answer 1

Answer to the question is B: 49

Answer 2

B. 49

Explanation:

21/3 = 7 new houses

7*7 = 49 old houses