Average employee in office A, B, C, and D is 40 and average employee of office B, C, D, and E is 37. If number of employees in office E is 30. Find the average employee in office A and E?

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  1. 42
  2. 45
  3. 39
  4. 36
  5. 37

Answer (Detailed Solution Below)

Option 4 : 36
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Detailed Solution

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Calculation

Avg of A+B+C+D = 40 ⇒ sum = 160
Avg of B+C+D+E = 37 ⇒ sum = 148
Subtract: A − E = 12
E = 30 ⇒ A = 42
Avg of A and E = (42 + 30)/2 = 36

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