• Numerical Ability - Average
Question

The average of 5 numbers is 7. When three new numbers are added, the average of these eight is 8. 5. The average of the three new numbers is

  • A) 11
  • B) 7.75
  • C) 8.5         
  • D) 7
  • E) None of These
Solution

Ans.A

Explanation:
Sum of three new numbers = (8×8.5−5×7)(8×8.5−5×7)=33.

There Average =33/3=11.

Ans.A

Explanation:
Sum of three new numbers = (8×8.5−5×7)(8×8.5−5×7)=33.

There Average =33/3=11.
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