Question 1022659
 A gas tank which can hold a total of 50 liters contains only 6 liters of gas when the driver stops to refuel. If it takes 4 minutes to fill up the tank, what is the rate in liters per minute? 
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Ans: (50-6)/4 (liters per min) = 44/4 = 11 liters/min
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Cheers,
Stan H.
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