Answer:
Step-by-step explanation:
Firstly, we can calculate the increase of 20% to the 100 euros, and get:
100 x 1.2 = 120 euros.
Now, we can decrease the 120 euros by 20% of 120,which gives us:
120 - 120 x 0.2 = 120 -24 = 96 euros
Solution: 96 euros
