In a class, there are 30 boys and 60 girls. ___ is the ratio of boys to the total number of students in the class?

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Solution

The number of boys in the class is 30 and number of girls in the class are 60.
$∴$ Total number of students is equal to 90.
Ratio of number of boys to the total number of students is equal to $\frac{30}{90} = \frac{1}{3} = 1 : 3$

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In a class, there are 30 boys and 60 girls. ___ is the ratio of boys to the total number of students in the class?

The number of boys in the class is 30 and number of girls in the class are 60. ∴ Total number of students is equal to 90. Ratio of number of boys to the total number of students is equal to 3090=13=1:3

The number of boys in the class is 30 and number of girls in the class are 60.
$∴$ Total number of students is equal to 90.
Ratio of number of boys to the total number of students is equal to $\frac{30}{90} = \frac{1}{3} = 1 : 3$