Question

There are three numbers 'a', 'b' and 'c' such that average of 'a' and 'b' is 14, average of 'b' and 'c' is 16 and average of 'a' and 'c' is 30. Find the average of 'a', 'b' and 'c'.

A 15
B 24
C 18
D 20
E None of these
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