The Ratio of the number of boys and girls in a school of 720 students is 7:5.How many more girls should be admitted to make the ratio 1:1?
Solution
Correct Answer: Option B
Number Of Boys=720x(7/12)=420
Number Of Girls=(720-420)=300
Let,The Girls Number be x should be admitted to make ratio 1:1
so,
420/(300+x)=1
420=300+x
x=120
Number Of Girls=(720-420)=300
Let,The Girls Number be x should be admitted to make ratio 1:1
so,
420/(300+x)=1
420=300+x
x=120
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