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A lab technician has one solution that is60% chlorinated and another that is 40%chlorinated. How much litres of 40%chlorinated solution is needed to make a100 litres solution that is 50% chlorine?50 litres54 litres40 litres48 litres |
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Answer» a lab technician has one SOLUTION that is 60% CHLORINATED and another that is 40% chlorinated. how MUCH of each solution is needed to make a 100 L solution that is 50% clorine? --------------------- 60% solution DATA: Amount is "x" L ; amount of chlorine in them is 0.6x L --------------------- 40% solution DATA: Amount is "100-x" L ; amount of chlorine in them is 0.4(100-x)=(40-0.4x) L --------------------- Mixture DATA: Amount is 100 L ; amount of chlorine is 0.5(100)= 50 L ---------------------- EQUATION: chlorine + chlorine = chlorine 0.6x + 40-0.4x = 50 0.3x=10 x=33.3 L (amount of 60% solution in the mixture) 100-33.3 L = 66.7 L (amount of 40% solution in the mixture) ------------------- |
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