Average of 15 numbers 810. If average of 9 is 805, average of remaining 6? MCQ with Answer and Explanation

Average of 15 numbers 810. If average of 9 is 805, average of remaining 6?
A. 818
B. 817.5
C. 820
D. 815
Answer: Option B
Solution (By JKExamLibrary)
Sum15=12150. Sum9=7245. Remaining=4905. Average=817.5.

This question belongs to: Maths Average
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Practice More Average Questions

Question #1
Average of 9 numbers 1190. If average of 6 is 1185, average of remaining 3?
A. 1205
B. 1200
C. 1195
D. 1198

Correct Answer: Option B


Explanation:
Sum9=10710. Sum6=7110. Remaining=3600. Average=1200.

This question belongs to: Maths Average
Question #2
Average of 15 numbers 1860. If average of 9 is 1855, average of remaining 6?
A. 1870
B. 1868
C. 1867.5
D. 1865

Correct Answer: Option C


Explanation:
Sum15=27900. Sum9=16695. Remaining=11205. Average=1867.5.

This question belongs to: Maths Average
Question #3
Average of 1,3,5,...,19 (odd numbers).
A. 11
B. 9
C. 10
D. 12

Correct Answer: Option C


Explanation:
10 terms, average 10.

This question belongs to: Maths Average