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May 29, 2015

Homework Help: math

Posted by Da S on Tuesday, March 20, 2012 at 11:49pm.

a boat travel for 4hr from pole a to pole b.then it travel for 3hr from pole b back to pole a.the distance between the two poles was 40km
a.find the total time taken for the whole journey
b.find the average speed for the whole journey

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