Machine-translated by Google. Questions are authored in English.
Top

Discussion

The average of ten numbers is 8. If each number is multiplied by 14, then the average of the new set of numbers is:

  • A.112
  • B.84
  • C.19
  • D.14

Answer: A

When every number of a set is multiplied by 14, the average is multiplied by the same 14. The average of the ten numbers is 8, so the new average is 8 x 14 = 112.

The figure 84 comes from multiplying by 10.5, and 19 and 14 come from adding or from forgetting to multiply the original average. The sum of the new numbers is 1120, and divided by 10 it gives 112.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.