Question

After reducing the salary of A man by 50%if is increased by 50%the
loss is

Answer 1

For decrease take them (-x) and (-y). The symbol of + or - in answer indicate Increase or decrease respectively.

Decrease is 50% that is -50 and Increase is 50% that is +50 ; hence

Change = -50+50+{(-50 * +50)/100} %
= -250/100 %
= -25 %
Impact is -ve
hence loss = 25%

We can calculate the following using formula :
Total after two or more discounts
Change in salary
Profit or Loss
Compound Interest.. Hope now it helps you