Answer:
28
Step-by-step explanation:
You want to know what 20% of 140 is.
The % symbol can be considered to mean "/100". This means ...
20% = 20/100
and 20% of 140 is ...
20% × 140 = 20/100 × 140 = 2800/100 = 28
There are 28 students in the Environmental Club.
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Additional comment
You know that 10% is 1/10. This fraction can of 140 can be found by moving the decimal point one place left:
10% of 140. = 14.0
Of course, 20% is twice as much, so ...
20% of 140 = 2 × (10% of 140) = 2 × 14 = 28
In this context, "of" means "times": 20% of 140 means 20% × 140.
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