the strength of a class is 45 including 20 girls find the ratio of the numbers of boys to girls
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total number of students = 45
no. of girls = 20
no. of boys = 45 - 20
= 25
therefore, ratio of boys to girls = 25 : 20
= 5: 4
no. of girls = 20
no. of boys = 45 - 20
= 25
therefore, ratio of boys to girls = 25 : 20
= 5: 4
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