5. To buy a new mobile phone, Lovro was still short by $5 \%$ of his savings. However, after that, the price of the mobile phone was reduced by 5 \%. Then Lovro realized that he had enough money for the mobile phone, and he would even have 4 kuna left after the purchase. What was the price of the mobile phone before and after the reduction?

## Tasks for 10 points:
First method: Let Lovro have $x$ kuna. The price of the mobile phone is $x+0.05 x=1.05 x$. 1 POINT

The reduced price of the mobile phone is $0.95 \cdot 1.05 x=0.9975 x$. 1 POINT

The difference $x-0.9975 x=0.0025 x$ is 4 kuna. 1 POINT

Lovro's savings amount to $x=4: 0.0025=1600 \mathrm{kn}$. 1 POINT

The price of the mobile phone was 1680 kn, 1 POINT

and it was reduced to 1596 kn. 1 POINT

TOTAL 6 POINTS