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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?

  • A. 5
  • B. 5
  • C. 5
  • D. 5

Answer: Option B

Explanation:

  a+b = 40*2 = 80

                                             b+c = 70

(doing subtraction),    a-c = 10 (Ans

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