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12-10-2017
Mathematics

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The ratio of boys to girls in a class is 4:3. if there are 70 students in the class how many are boys

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14-10-2017

Here is an example,

The ratio of boys to girls in the class was 4:5. There were 24 people in the class. How many boys? How many girls?
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4:5 is the same as 4x:5x where 4x is # of boys and 5x is # of girls.
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Equation:
4x+5x = 24
9x = 24
x = 24/9

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