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Old 07-26-2007   #1
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Default i have an 8th grade math question about finding height of a water fall 0_o?

Sam's trip down the river starts at an elevation of 9,683 feet above sea level. When he reaches the end, he is at 8,911 feet above sea level. The waterfalls in the river account for 30% or 231.6 feet of the drop. There are 17 waterfalls on the river that Sam will go down. What is the average height of each waterfall?