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July 30, 2015

Homework Help: math

Posted by dawn on Monday, March 21, 2011 at 10:12pm.

to save fuel on the 240 km trip to the cottage, the Nakamura family reduce their usual average speed by 20 km/h. this lengthens their journey by 1 hour. what is the slower average speed?

pleassee help! thanks :)

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