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September 20, 2014

September 20, 2014

Posted by **Jim** on Wednesday, January 2, 2013 at 5:59pm.

- math -
**Reiny**, Wednesday, January 2, 2013 at 6:24pmrate of slower jet ---- x km/h

rate of faster jet ----- x+100 km/h

solve for x

2.5x+ 2.5(x+100) = 4000

(I got x = 750 , so the faster jet goes 850 km/h)

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