Question
Twenty minutes ago, 60% of the children in a hall were boys. 10 more children entered the hall. As a result, the number of boys increased by 20% and the number of girls increased by 75%. How many children are in the hall now?
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Twenty minutes ago, 60% of the children in a hall were boys. 10 more children entered the hall. As a result, the number of boys increased by 20% and the number of girls increased by 75%. How many children are in the hall now?