The average of two numbers A and B is 20, that of B and Cis 19 and of – McqOptions

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1.	The average of two numbers A and B is 20, that of B and Cis 19 and of C and A it is 21. What is the value of A ?
A.	24
B.	22
C.	20
D.	18
Answer» C. 20

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