4. Franjo, Marta and Šime are collecting money to help a friend. Marta collected 3 times more than Franjo, and Šime collected 25 kuna more than Marta. How much did each of them collect if together they collected 186 kuna?
First method:

Let's show the solution graphically:

2 POINTS

![](https://cdn.mathpix.com/cropped/2024_05_30_ee341ed8da932d74dbd4g-2.jpg?height=514&width=571&top_left_y=1379&top_left_x=454)

Furthermore, $7 \cdot \mathrm{F} + 25 = 186$. 2 POINTS

So, $7 \cdot \mathrm{F} = 186 - 25 = 161$. 2 POINTS

Therefore, F $= 161 : 7 = 23$. 1 POINT

Franjo collected 23 kuna. 1 POINT

Marta collected $3 \cdot 23 = 69$ kuna. 1 POINT

Šime collected $69 + 25 = 94$ kuna. 1 POINT

TOTAL 10 POINTS

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