Question

Two planes left an airport at noon. One flew east at a certain speed and the other flew west at twice the speed. The planes were 2700 mi apart in 3 h. How fast was each plane flying?

Answer 1

Answer:

Speed of I plane=300 mile/hr

speed of II plane=2x=600 mile/hr

Step-by-step explanation:

Let speed o I plane=x mile/hr

then speed of II plane =2x mile/hr

They will be at distance x+2x=3x in one hr

so distance in 3hrs= 3*3x=2700

9x=2700

x=300 mile/hr

Hence

Speed of I plane=300 mile/hr

speed of II plane=2x=600 mile/hr