# maths

A passenger plane and a jest leave at the same time from the same airport, traveling in opposite directions. The jet travels at twice the speed of the passenger plane. They are 2400 miles apart in 4 hours. Find the speed of the passenger plane and jet.

1. 👍
2. 👎
3. 👁
1. Let the speed of the passenger plane be x mph, then the speed of the jet is 2x mph

The both went for 4 hours, so the
passenger plane went 4x miles
the jet went 4(2x) or 8x miles

So isn't 4x+8x = 2400 ???

etc.

1. 👍
2. 👎

## Similar Questions

1. ### Velocity and Displacement

A plane is sitting on a runway, awaiting takeoff. On an adjacent parallel runway, another plane lands and passes the stationary plane at a speed of 47 m/s. The arriving plane has a length of 32 m. By looking out the window (very

2. ### physics

An airport has runways only 142 m long. Asmall plane must reach a ground speed of 45 m/s before it can become airborne. What average acceleration must the plane’s engines provide if it is to take off safely from its

3. ### physics

A jumbo jet taxiing down the runway receives word that it must return to the gate to pick up an important passenger who was late to his connecting flight. The jet is traveling at 45.0 m/s when the pilot resieves the messae. What

4. ### Trigonometry

A plane leaves airport A and travels 560 miles to airport B at a bearing of N32E. The plane leaves airport B and travels to airport C 320 miles away at a bearing of S72E. Find the distance from airport A to airport C.

1. ### MATH

Two planes leave an airport at the same time, one flying east, the other flying west.The eastbound plane travels 100 mph slower. They are 3040mi apart after 4hrs. find the speed of each plane

2. ### Trigonometry

two airplanes leave an airport at the same time one hour later they are 189km/hr apart. if one plane traveled 168km/hr and the other traveled 244km/hr for the hour what is the angle between their flight path

3. ### math

Two planes leave simultaneously from Chicago's O'Hare Airport, one flying due north and the other due east. The northbound plane is flying 50 miles per hour faster than the eastbound plane. After 3 hours the planes are 2840 miles

4. ### physics

An airport has runways only 132 m long. A small plane must reach a ground speed of 40 m/s before it can become airborne. What average acceleration must the plane’s engines provide if it is to take off safely from its airport?

1. ### physics

A jet plane lands with a speed of 81 m/s and can accelerate at a maximum rate of −5.00 m/s2 as it comes to rest. (a) From the instant the plane touches the runway, what is the minimum time needed before it can come to rest? (b)

2. ### physics

The engineer of a passenger train traveling at 25.0 m/s sights a freight train whose caboose is 200 m ahead on the same track. The freight train is traveling at 15.0 m/s in the same direction as the passenger train. The engineer

3. ### Physics

the engineer of a passenger train traveling at 25.0 m/s sights a freight train whose caboose is 200m ahead on the same track. The freight train is traveling at 15.0 m/s in the same direction as the passenger train. The engineer of

4. ### trig

A plane is flying at an elevation of 30000 feet. It is within sight of the airport and the pilot finds that the angle of depression to the airport is 18. Find the distance between the plane and the airport. Find the distance