10. There are 120 girls and 57 boys in a school. If 5% of the girls leave and no new pupils are admitted,what percentage of the whole school will be boys?
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Answer: 33.33% students of the whole school will be boys
Step-by-step explanation:
Number of girls =120
Number of boys = 57
Number of girls left = 5% of 120
=5/100*120
= 6 girls
Few girls left with no replacement, so remaining number of girls
= 120-6 = 114
Total number of students
= Number of boys + Number of girls
= 57 + 114
= 171
With the final remaining Boys %
= 57/171*100
= 5700/171
= 33 1/3
= 33.33
∴ 33.33% students of the whole school will be boys
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