The distance between points A and B is 33 km. At 9 am a tourist left A to B at a speed of 4 km per hour.

The distance between points A and B is 33 km. At 9 am a tourist left A to B at a speed of 4 km per hour. At 10.30 am, another tourist left B to A at a speed of 5 km per hour. What time will they meet?

Let’s calculate how much the first tourist moved before the second tourist left:

10 hours 30 minutes – 9 hours = 1 hour 30 minutes.

Let’s calculate what distance he covered in 1 hour 30 minutes:

1.5 * 4 = 6 kilometers.

Let’s calculate the distance between pedestrians at 10 hours 30 minutes:

33 – 6 = 27 kilometers.

Let’s calculate the total speed of tourists:

4 + 5 = 9 kilometers per hour.

Let’s calculate how long they will meet:

27: 9 = 3 hours.

10.5 + 3 = 13.5 hours.

They will meet at 13:30.

Answer: tourists will meet at 13:30.