The helicopter flew at an altitude of 100m. Then he went down to 60m and again ascended to 40m.

The helicopter flew at an altitude of 100m. Then he went down to 60m and again ascended to 40m. How high the helicopter was.

In order to find at what altitude the helicopter turned out to be, we need to trivially follow the condition, that is, first take and subtract from the initial flight altitude, the altitude to which the pilot first descended. Then when we get the result, take it and add to it the altitude to which the pilot climbed. There is a more complex way in which we need to get confused, in it we first need to find the difference between rise and fall, and then add / subtract the difference from the initial height:

100 – 60 = 40;

40 + 40 = 80 meters flight altitude.

Answer: the helicopter flew at an altitude of 80 meters.