Answer:
20 helmets were sold ($500)
4 bikes were sold ($2000)
Explanation:
Bikes: $500 each, helmets: $25 each
Ratio of helmets to bikes 5:1, or $125:$500, which totals to $625
$2500 ÷ $625 = 4
5:1 x 4 = 20:4
$125:$500 x 4 = $500:$2000
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