## Task 3 - 120513

From a railway station, potatoes were transported away by two trucks, totaling 170 t. The first truck, which was loaded with 4 t of potatoes per trip, made a total of 20 trips.

How many trips did the second truck make in total if it was loaded with $5 \mathrm{t}$ of potatoes per trip that the first truck did not transport?
The first truck transports in 20 trips $20 \cdot 4=80$ t of potatoes.

From the remaining $170 \mathrm{t}-80 \mathrm{t}=90 \mathrm{t}$, the second truck transports 5 tons per trip, i.e., $90: 5=18$. The second truck must make 18 trips.