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Ask a math problem in the fifth grade of primary school (percentage)
Add 25g sugar to100g water. What is the sugar content of sugar water?

100+25= 125 (g)

25/ 125=25÷25/ 125÷25= 1/5= 1*20/5*20=20/ 100=20%

A: The sugar content of sugar water is 20%.

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