To find your answer you would divide 21 by 3 which would be 7, once you've got 7 you would multiply it by 9 which would give you the amount of old houses that there is which would be 63.
Answer:
18
Step-by-step explanation:
30%=.3
60*.3=18
30% of 60 =18
Step-by-step explanation:
this the answer.............. ...........
Answer:
Step-by-step explanation:
3m - 4 is the answer
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