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Question

If 20 is decreased by 50%, we get .

A
12
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B
15
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C
10
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Solution

The correct option is C 10
50% of 20 = 50100 × 20 = 10
Now, decreasing 20 by 50% of 20 is:
= 20 - 50% of 20
= 20 - 10
= 10

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