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There are 30 people in the math group. There are five more people in the math group than in the art group. How many people are there in the art group?
There are x people in the art group.

( 1+20%)x=30

1.2x=30

x=25，

A: There are still 25 people in the art group.

30÷( 1+20%)

=30÷ 1.2

=25 (person),

A: There are still 25 people in the art group.

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