The number of students in a class is 60. The number of boys is seven-fifths of the number of girls. Find the number of boys in the class.
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Solution -
Let the number of girls be x
So, the number of boys be 7x / 5
According to Question,
Given : Total no. of students = 60
x + 7x / 5 = 60
⇒ (5x + 7x) / 5 = 60
⇒ 12x = 300
⇒ x = 300 / 12
⇒ x = 25
Number of -
Girls = x = 25
Boys = 7x / 5 = 7 × 25 / 5
= 7 × 5 = 35
∴ There are 35 number of boys and 25 number of girls in the class
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Step-by-step explanation:
Let the number of girls be x
So, the number of boys be 7x / 5
According to Question,
Given : Total no. of students = 60
x + 7x / 5 = 60
⇒ (5x + 7x) / 5 = 60
⇒ 12x = 300
⇒ x = 300 / 12
⇒ x = 25
Number of -
Girls = x = 25
Boys = 7x / 5 = 7 × 25 / 5
= 7 × 5 = 35
∴ There are 35 number of boys and 25 number of girls in the class
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