1 . If 3a +5b = 10 and 5a + 3b = 30, what is the average (arithmetic mean) of a and b?
- A. 4
- B. 2.5
- C. 3.5
- D. 4.5
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1 . If 3a +5b = 10 and 5a + 3b = 30, what is the average (arithmetic mean) of a and b?
View Answer | Discuss in Forum | Workspace | Report |