SOLUTION:
An engine has a 6.6 litre capacity cooling system. If the most ideal solution of antifreeze for this engine is a 57.6 % solution (a mix of 57.6 % pure antifreeze and 42.4 % wate
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Question 716949:
An engine has a 6.6 litre capacity cooling system. If the most ideal solution of antifreeze for this engine is a 57.6 % solution (a mix of 57.6 % pure antifreeze and 42.4 % water). How much pure antifreeze (in litres) must be combined with a 29.4 % solution to achieve 6.6 litres of the ideal solution?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = liters of pure antifreeze to be used
Let = liters of 29.4% solution to be used
= liters of pure antifreeze in 29.4% solution
---------------
given:
(1)
(2)
-----------------------------
(2)
(2)
(2)
Multiply both sides of (1) by and
subtract (1) from (2)
(2)
(1)
and, since
(1)
(1)
2.6374 liters of pure antifreeze must be used
check answer:
(2)
(2)
(2)
(2)
OK- I think error is due to rounding off
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