Question

A jar initially contains a certain quantity of buttermilk. After removing 8 liters of the mixture and replacing it with cream, this process is repeated twice more, with 10 liters and then 12 liters being taken out and replaced with cream each time. If the initial quantity of buttermilk in the jar is 80 liters, what is the final quantity of buttermilk in the jar?

A 45
B 40
C 50
D 45
E none of these
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