3. Master Jure is installing central heating, and he charges by taking half the cost of the materials used and adding 170 kuna per day of work. How much did Mr. Jurić pay Master Jure, and how much was the material if the total bill was 3348 kuna, and the job was completed in 3 days?
3. The master worked for 3 days, and the value of his daily wages is 510 kuna, while the material and his work excluding daily wages are worth 2838 kuna:

2 points

If the master's work is worth half the price of the material, then the price of the material is twice the price of the master.

Let the master Jure earn $\square$ (or $x$) kuna.

Then the price of the material is $\square \square$ (or $2x$) kuna, and together this amounts to $\square \square \square$ (or 3x) kuna.

By dividing 2838:3, we get that $\square$ (or $x$) is 946 kuna. 4 points

Including the daily wages, the master Jure earned $510+946=1456$ kuna. 2 points

The price of the material is 2838 - 946 or 946 $\cdot$ 2, i.e., 1892 kuna. 2 points

.$T O T A L 10$ POINTS