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Question

In a class A of $$25$$ students, $$20$$ passed with $$60\%$$ or more marks; in another class B of $$30$$ students, $$24$$ passed with $$60\%$$ or more marks. In which class was a greater fraction of students getting with $$60\%$$ or more marks?

Solution
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Fraction of students of class $$A$$ who passed in $$1st$$ class $$= \dfrac {20}{25} = \dfrac {4}{5}$$
Fraction of students of class $$B$$ who passed in $$1st$$ class $$= \dfrac {24}{30} = \dfrac {4}{5}$$
From both classes, an equal fraction of students passed in first class.

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