The average of 8 numbers is 24. If 32 is added, what is the new average?
Correct answer
C. 224/9
Why
Original total = 8 x 24 = 192. New total = 224 over 9 numbers, so average = 224/9.
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Backup practice: The average of 8 numbers is 24. If 32 is added, what is the new average?
Correct answer
C. 224/9
Why
Original total = 8 x 24 = 192. New total = 224 over 9 numbers, so average = 224/9.
The average of 5 numbers is 18. If 24 is added to the group, what is the new average?
Correct answer
A. 19
Why
Original total = 5 x 18 = 90. New total = 90 + 24 = 114. New average = 114 / 6 = 19.
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