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August 29, 2014

Homework Help: Maths

Posted by Surya on Wednesday, March 7, 2012 at 9:14am.

A moment ago, 80% of the children in a hall were girls. 48 girls and 2 boys left the hall. The remaining children were then told to form groups of 9. In each group, there were 2 boys. How many children were there in the hall first?

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