Discussion

Question:

Raman's salary was decreased by 30% and subsequently increased by 30%. He has a loss of

Explanation:

Let original salary = Rs. 100

Final salary = 100 × 0.7 × 1.3 = 91

So percentage decrease = (100 - 91)/100 × 100 = 9%

Alternately,

When a quantity is increased and subsequently decreased by same p%, net % change = -p²/100.

Here, net % change in salary = - 30²/100 = -9%

Hence, option (c).

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