Question
There were 423 girls and 116 more boys than girls in a concert hall. Later, 30 girls and 17 boys left the concert hall. How many fewer girls than boys were there in the end?
4 m

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There were 423 girls and 116 more boys than girls in a concert hall. Later, 30 girls and 17 boys left the concert hall. How many fewer girls than boys were there in the end?