Mathematics: An automobile radiator contains 20 l of antifreeze and water. this mixture is 20% antifreeze. how much of this mixture should be drained and replaced with pure antifreeze so that the mixture will be 50% antifreeze.

An automobile radiator contains 20 l of antifreeze

Ответ:

yam78

02.06.2020

Try this solution (this suggested way is not short, but pure):
1. to make up the scheme of changes; 2. to make up the system of the equations according to the scheme.

Note, that antifreeze is marked by black in the picture.
An automobile radiator contains 20 l of antifreeze and water. this mixture is 20% antifreeze. how mu

An automobile radiator contains 20 l of antifreeze and water. this mixture is 20% antifreeze. how mu

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Ответ:

volleyballfun24

18.04.2021

Mathematics

Step-by-step explanation:

dh48t8i3i3uuririjrjdjdklapd

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An automobile radiator contains 20 l of antifreeze and water. this mixture is 20% antifreeze. how much of this mixture should be drained and replaced with pure antifreeze so that the mixture will be 50% antifreeze.

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