Mathematics
TstM01423153603
13

it is neccessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 40 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strenght

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(1) Answers
brebre11

I think its between 40 to 50%

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