3. Two trains started simultaneously towards each other. The first train departed from place A with an average speed of 58 kilometers per hour, and the second train departed from place B with an average speed of 64 kilometers per hour. The trains met after 4 hours. By the time they met, the first train had made three stops, each lasting 10 minutes, and the second train had made two stops, each lasting 15 minutes. What is the distance between place A and place B?
3. The first train had 3 stops lasting 10 minutes each, which totals $3 \cdot 10=30$ minutes. 1 POINT This means the train was running for 3 hours and 30 minutes.

During this time, the first train traveled:

$$
\begin{array}{ll}
3 \cdot 58+58: 2= & 1 \text{ POINT} \\
=174+29 & 1 \text{ POINT} \\
=203 \text{ km} &
\end{array}
$$

The second train had 2 stops lasting 15 minutes each, which totals $2 \cdot 15=30$ minutes.

This means the train was running for 3 hours and 30 minutes.

1 POINT
During this time, the second train traveled:

$3 \cdot 64+64: 2=$

$=192+32$

$=224 \text{ km}$

$203+224=427 \text{ km}$ 1 POINT

The distance between place A and place B is 427 km.