1 . The average of a and b is 40 and the sum of b and c is 70. what is the value of a -c?
- A. 5
- B. 10
- C. 15
- D. 20
- D. None of them
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1 . The average of a and b is 40 and the sum of b and c is 70. what is the value of a -c?
View Answer | Discuss in Forum | Workspace | Report |