Question
There were 490 boys and 166 more girls than boys in a concert hall. Later, 30 boys and 15 girls left the concert hall. How many fewer boys than girls were there in the end?
4 m

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There were 490 boys and 166 more girls than boys in a concert hall. Later, 30 boys and 15 girls left the concert hall. How many fewer boys than girls were there in the end?