There were 45 green cars.
15% of the cars were green.
⇒ 15% = 45
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Find 1% :
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15% = 45
1% = 45 ÷ 15
1% = 3
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Find 100% :
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1% = 3
100% = 3 x 100
100% = 300
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Answer: There were 300 cars altogether.
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