Yucai Primary School held a math contest. - Training Enrollment Network

Yucai Primary School held a math contest.

Solution: If the number of boys is X, the number of girls is (28+x).

X+0.75 (28+X) = 42，X+0.75x+2 1 = 42， 1.75x = 2 1，X = 12。 So the number of boys is 12, and the number of girls is 65438.

52 divided by 20%=260 people A: There are 260 people in grade 6.

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