Mathematics, 27.11.2019 20:31 lebron06james
How many liters of a 20% solution of a chemical should be mixed with 15 liters of 50% solution to obtain a 30% mixture
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Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?
Answers: 2
How many liters of a 20% solution of a chemical should be mixed with 15 liters of 50% solution to ob...
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