The ratio of boys to girls in a class is 5:7. There are 36 students in the class. How many students are boys?
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Step-by-step explanation: lets the no. of boys be 5x and no. of girls be 7x,
total no. of students= 36
A.T.Q,
5x+7x=36
=> 12x = 36
=> x =36/12
=> x= 3
∴ no. of boys = 5x = 5 X 3 = 15
no. of girls = 7x = 7 X 3 = 21
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