A person's salary was decreased by 50% and subseqently increased by 50% and then again increased by 100%. How much percentage does he lose or gain?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Gain of 50%
Explanation:
Let us suppose that the salary of the person was Rs. 100
After a decrease of 50%, it becomes 100 × (50/100) = Rs 50
Then, after an increase of 50% it becomes 50 × (150/100) = Rs 75
Again, after an increase of 100% it becomes 75 × (200/100) = Rs 150
He thus gained Rs 50.
Gain% = (50/100) × 100 = 50%
Hence the gain is 50%.