If a + b = 10 and b + c = 20 and c + a = 30 then what is the value of – McqOptions

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1.	If a + b = 10 and b + c = 20 and c + a = 30 then what is the value of a + b + c = ?
A.	50
B.	40
C.	35
D.	30
Answer» E.

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