If the salary of an employee is first increased by 20% and the decreased by 12%, then what is the change in his salary in percent?

Sure, let's solve this step by step:

1. Let's assume the initial salary of the employee is $100 (you can choose any amount, but$100 makes the calculations easier).

2. If the salary is increased by 20%, it becomes $120 ($100 + 20% of $100).

3. Now, if this increased salary is decreased by 12%, we subtract 12% of $120 from$120. That is $120 - 12$120 = $120 -$14.4 = $105.6.

4. So, the final salary of the employee is $105.6.

5. To find the percentage change in the salary, we subtract the initial salary from the final salary, divide by the initial salary, and then multiply by 100. That is, (($105.6 -$100) / $100) * 100 = 5.6%.

So, the salary of the employee has effectively increased by 5.6%.