Question 734513
D=RT
D=180T FOR THE HELICOPTER.
D=330(T-.5) FOR THE PLANE.
180T=330(T-.5)
180T=330T-165
330T-180T=165
150T=165
T=165/150
T=1.1 HOURS (66 min.) AFTER THE HELICOPTER LEAVES THEY WILL MEET.
PROOF:
180*1.1=330(1.1-.5)
198=330*.6
198=198