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How many liters each of 30% acid solution and a 65% acid solution must be used to produced 70 liters of a 60% acid solution ?
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X+y=-4 x-y=2 use elimination with adding and subtraction
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The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?
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In the next 10 month, colin wants to save $900 for his vacation. he plans to save $75 each of the first 8 months. how much must he save each of the last 2 months in order to meet his goal if he saves the same amount each month ?
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How many liters each of 30% acid solution and a 65% acid solution must be used to produced 70 liters...
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