That is the correct method, but not the answer.

18 divided by 20 = 0.9, x100 = 90%

18 divided by 20 = 0.9, x100 = 90%

That is the correct method, but not the answer.

18 divided by 20 = 0.9, x100 = 90%

18 divided by 20 = 0.9, x100 = 90%

90%

90

18 divided by 20 times 100

70%

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