Question
The number of girls in the lecture theatre was 38 that of the boys. There were 130 more boys than girls. After some boys had left the lecture theatre, the number of girls at the lecture theatre was thrice the number of the remaining boys. How many boys left the lecture theatre?
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The number of girls in the lecture theatre was 38 that of the boys. There were 130 more boys than girls. After some boys had left the lecture theatre, the number of girls at the lecture theatre was thrice the number of the remaining boys. How many boys left the lecture theatre?