Answer:
425
Step-by-step explanation:
Recall that ratios is a mathematical comparison of two things--in our case, parking.
The ratio 17 : 3 means that for every 17 parked spots, there are 3 empty ones. This totals to 20 parking spots.
If the problem says that instead of 20 total spots, there are 500 then the ratio must be scaled up by a factor of 25 (or 500/20) so that our ratio does equals to 500.
So, the new ratio is:
17(25): 3(25) = 425 : 75, where 425 is the number of fully parked spots.
