SOLUTION: A plane left emerald city flying at an average rate of 270 mph. Two hours later, another plane left Emerald city in the same direction at 420 mph. How long will the second plane fl

Question 921588: A plane left emerald city flying at an average rate of 270 mph. Two hours later, another plane left Emerald city in the same direction at 420 mph. How long will the second plane flying till catches up with the first?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Gaining speed 420-270= 150 mph
Head start 270*2 =540 miles
Time to catch up 540/150=3.6 hours
Algebraic solution
270(t+2)=420t
270t+540=420t
540=420t-270t
540=150t
t=3.6 hours
Distance to meeting 3.6*420=1512 miles
code drtch1

RELATED QUESTIONS
A plane, that can fly an average of 400 mph in still air, makes frequent round trips from (answered by josmiceli,MathTherapy)

A cargo plane left Tokyo and flew toward Las Vegas at an average speed of 385.6 km/h.... (answered by checkley77)

A cargo plane left Los Angeles and flew east at an average speed of 320 km/h. Some time... (answered by lwsshak3)

A passenger plane left Paris and flew south at an average speed of 270 km/h. A jet left... (answered by stanbon)

I need help!! a passenger plane left Tokyo and flew south. 2 hours later a jet left... (answered by lwsshak3)

A train left frog city traveling north at 60 mph. Two hours later, another train left... (answered by rfer)

a city is 3 hours ahead of another city and the distance is 2790 miles. the plane left at (answered by Fombitz)

a plane left an airport at 4PM flying west at the rate of 300MPH. AT 4:30PM another... (answered by josmiceli)

A westbound float plane left Anchorage at 1:00 pm. Two hours later, an eastbound float... (answered by ankor@dixie-net.com)