Question

in a class of 40 students, only 20% of the students are participating in an art competition. how many students are not taking part in the competition?​

Answer 1

Answer:  32

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Explanation:

There are two approaches.

Method 1)

20% of 40 = 0.20*40 = 8

Since 8 students are participating, this means 40-8 = 32 are not participating.

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Method 2)

20% are participating, so 100% - 20% = 80% are not participating

80% of 40 = 0.80*40 = 32