At the surface of the Earth, the air temperature is +18 ° С. The travelers ascended in a hot air balloon to an altitude of 2500 m.

At the surface of the Earth, the air temperature is +18 ° С. The travelers ascended in a hot air balloon to an altitude of 2500 m. What will the thermometer read?

It is known that for every 1000 meters the temperature increases / decreases by 6 degrees.
In the case of rising to the protrusion, it decreases.
2500m: 1000m = 2.5 times – how many times the temperature has decreased.
2.5 * 6 degrees = 15 degrees – the difference in temperature.
18 degrees – 15 degrees = 3 degrees – temperature at 2500m
Answer: The thermometer reading at an altitude of 2500m is 3 degrees.