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speed of stream

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Master | Next Rank: 500 Posts
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speed of stream

by uptowngirl92 » Thu Sep 17, 2009 2:43 am
A boat crossed a lake from North to South at the speed of 4 km/h, entered a river and covered twice as much distance going upstream at 3 km/h. It then turned around and stopped at the south shore of the lake. If it averaged 3.8 km/h that day, what was its approximate downstream speed?

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Master | Next Rank: 500 Posts
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by xcusemeplz2009 » Thu Sep 17, 2009 9:06 am
is it B) 5
It does not matter how many times you get knocked down , but how many times you get up
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