Question 1196779
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x = number of townhomes
1.5x = number of single-family homes since they sell 1.5 times more often compared to townhomes


230,000x = amount of money made from selling the townhomes
260,000*1.5x = 390,000x = amount of money made from selling the single-family homes


The two subtotals add to $16,000,000
230,000x+390,000x = 16,000,000
(230,000+390,000)x = 16,000,000
620,000x = 16,000,000
x = (16,000,000)/(620,000)
x = 25.806 approximately


The fact we don't get a whole number for x seems to suggest that there might be a typo in one (or more) of the numbers in the question. 
I would ask your teacher for further clarification.
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