8. The mean of 10 scores is 54. If two scores, 70 and 62 are removed, what is the mean of the remaining scores?
A. 49
B. 51
C. 53
D. 55
9. The mean of 20 scores is 140. If two scores, 92 and 98 are removed, what is the mean of the remaining scores?
A. 130
B. 135
C. 140
D. 145
10. Loida's scores on the first four examinations were 78, 80, 82, and 79. What score must she receive on the last examination in order to have a mean of 80?
A. 78
B. 81
C. 84
D. 87
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Verified answer
Answer:
8.
(49)
9.
(145)
10.
(78)
Step-by-step explanation:
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