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| Math Central | Quandaries & Queries |
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Question from Carl, a parent: two jets leave denver at 9 am. One flying east at a speed of 50 km per hour greater than the other which is traveling west. At 11 am the planes are 2500 km apart. Find their speeds. |
Hi Carl.
Here's a hint:
The eastbound plane is going 50 km/hr faster and the total time is 2 hours, so the eastbound plane has gone 100 km further.
Therefore, the westbound plane has gone half of 2500-100 km in this time.
Can you take it from here?
Cheers,
Stephen La Rocque
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