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Sticky Note
The average age of A, B, C, D, and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years. Age of E is:
  1. 48%
  2. 46%
  3. 44%
  4. 49%
Explanation

A + B + C + D + E = 40 × 5 = 200

A + B = 35 × 2 = 70

C + D = 42 × 2 = 84

Therefore,

E = (A + B + C + D + E) - (A + B + C + D)

E = 200 - 70 - 84

E = 46 years


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