There are 360 students in the sixth grade of experimental primary school, including 240 boys. What is the proportion of boys in the whole grade? How to express it in percentage?

240 ÷ 360 = 2323 ≈ 0.667 = 66.7% a: the number of boys accounts for 23% of the total number of students in the whole grade, which should be 66.7% in percentage

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