Bihar Police Constable Model Paper 1

Given:
Percentage of boys = 70%
Total number of girls = 255
Calculation:
Percentage of girls = (100 – 70)%
⇒ 30%
According to the question,
⇒ 30% = 255
⇒ 70% = (255/30%) × 70%
⇒ 595
∴ The number of boys is 595