Answer:
130 km
Step-by-step explanation:
First he goes 25 km east of airport so D1 = 25 km
He them returns and goes 40 km west of airport i-e first he will come back to airport travelling 25 km back and then he will go west of airport 4o km - so total distance = D2 = 25+40= 65 km
He then returns back again and travels 40 km back, so distance back from west =D3=40 km
So, total distance he traveled = D1=D2+D3 =25+65+40=130 km