Determine the average speed of the body, if the whole path is 18 km, for 10 km you spent 10 minutes

Determine the average speed of the body, if the whole path is 18 km, for 10 km you spent 10 minutes, for the rest 15 minutes?

Task data: S (total path traversed by the given body) = 18 km; S1 (first section) = 10 km; t1 (time spent on the first section of the path) = 10 minutes (1/6 h); S2 (remaining distance) = 8 km; t2 (the time the body has spent on the remaining path) = 15 minutes (1/4 h).

We calculate the average body speed by the formula: V = S / t = S / (t1 + t2).

Calculation: V = 18 / (1/6 + 1/4) = 18 / 0.417 = 43.2 km / h.

Answer: The given body had to move at an average speed of 43.2 km / h.