In a group of 500 students, 20% can swim, then how many students are non-swimmers?

100

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200

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300

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400

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Solution

The correct option is D 400
Total number of students=500

20% of students can swim,
= $\frac{20}{100}$ $\times$ 500
=100

Therefore, Non-swimmers = 500-100 = 400

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of them can swim, what percent of them can swim and what percentage cannot?

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In a group of 500 students, 20% can swim, then how many students are non-swimmers?

The correct option is D 400Total number of students=500 20% of students can swim, = 20100 ×500 =100 Therefore, Non-swimmers = 500-100 = 400

The correct option is D 400
Total number of students=500

20% of students can swim,
= $\frac{20}{100}$ $\times$ 500
=100

Therefore, Non-swimmers = 500-100 = 400