the ratio of two number of boy and girls in a school is 16:5.if total number of girl is 320in that school. then total number of students?
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Let the common ratio between number of boys and girls be x
Number of boys =7x
Number of girls =5x
As per the question,
Number of boys = Number of girls +8
7x=5x+8
Transpose 5x to LHS, we will get
7x−5x=8
2x=8
Divide both sides by 2
x=4
No. of boys =7x=7×4=28
No. of girls =5x=5×4=20
Total class students 28+20=4
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