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Question
In a class of 60 students, the number of girls is one-third the number of boys. Find the number of girls and boys in the class.
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Solution
As per the given information in the question, the total number of students in the class = 60.
Let x be the number of boys in the class.
Then, the number of girls in the class = `x/3`
According to the question,
`x + x/3 = 60`
⇒ `(3x + x)/3 = 60`
⇒ `(4x)/3 = 60`
⇒ 4x = 60 × 3
⇒ 4x = 180
⇒ x = `180/4` = 45
Hence, the number of boys in the class is 45 and the number of girls in the class is `45/3` i.e.15.
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