Question
The number of boys in the auditorium was 310 that of the girls. There were 245 more girls than boys. After some girls had left the auditorium, the number of boys at the auditorium was thrice the number of the remaining girls. How many girls left the auditorium?
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The number of boys in the auditorium was 310 that of the girls. There were 245 more girls than boys. After some girls had left the auditorium, the number of boys at the auditorium was thrice the number of the remaining girls. How many girls left the auditorium?