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Pls help me solve the question I Need to finish quickly

Pls help me solve the question I Need to finish quickly-example-1
User NSukonny
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1 Answer

1 vote
45: 100% - 17% = 83%

47: 44/2 = 22
22 - 1 = 21

See attached file
Pls help me solve the question I Need to finish quickly-example-1
User Samxiao
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