Deepika 39 s salary was decreased by 50 and subsequently increased by 50 How much percent does she l...........

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Deepika's salary was decreased by 50% and subsequently increased by 50%. How much percent does she lose?

10%

15%

25%

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Explanation:

To solve this question, we can apply a short trick approach;
Net% effect = ( x + y + xy/100)%
Increase or decrease, according to the +ve or –ve sign respectively.
Given;
Increased Number = x = 50%
Decreased Number = y = – 50%
By the short trick approach, we get
= (50 - 50 - 50 x 50 /100) = – 25%