Question 260068
Here are two water tanks of water. The 50 gallon is empty and is then filled at at rate of 2 gallons per minute. At the exact same time, the 140 gallon tank starts out completely full and is being emptied at a rate of 5 gallons per minute, when will both tanks contain the same amount of water? write an formula and graph this situation.
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1st tank Equation:
Amount in tank = 0 + 2t gallons
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2nd tank Equation:
Amount in tank = 140 - 5t gallons
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Problem equation:
Amount in tank #1 = Amount in tank #2
0+2t = 140-5t
7t = 140
t = 20 minutes
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{{{graph(400,300,-10,30,-10,170,2x,140-5x)}}}
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Cheers,
Stan H.