SOLUTION: One brand of cleaner used to etch concrete is 25% acid. A stronger industrial cleaner is 50% acid. How many litres of each cleaner should be mixed to produce 20 litres of a 40% aci
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Question 995803: One brand of cleaner used to etch concrete is 25% acid. A stronger industrial cleaner is 50% acid. How many litres of each cleaner should be mixed to produce 20 litres of a 40% acid solution? Answer by josgarithmetic(39617) (Show Source):
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