Ina school, out of 300 students, 70% are girls and 30% are boys. if 30 girls leave and no new boy is | MathCelebrity Forum

Ina school, out of 300 students, 70% are girls and 30% are boys. if 30 girls leave and no new boy is

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Ina school, out of 300 students, 70% are girls and 30% are boys. if 30 girls leave and no new boy is admitted, what is the new% of girls in the school.

Current ratios:
  • Girls = 70% of 300 = 210
  • Boys = 30% of 300 = 90
Ratios after girls leave:
  • Girls = 210 - 30 = 180
  • Boys = 90
  • Total = 180 + 90 = 270
  • Girls Percent = 180/270 = 2/3 = 66 & 2/3%
 
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