Question 192838
Formulate equations.

Dist = rate * time.

D1 = dist from home to airport
D2 = dist from airport to off

D1 + D2 = 150
30*t1 + 60*t2 = 150
t1 + 2t2 = 5               ----- eq 1

Entire trip took 3 hours
t1 + t2 = 3 -------------------- eq 2

Solve eq 1 and 2 and you get
t1 = 1 hour
t2 = 2 hour

D2 = t2*speed2 = 2 * 60 = 120 miles.