The average of 11 results is 50. If the average of the first six results is 49 and that of the last six is 52, find the sixth result.
A
56
B
46
C
52
D
59
Correct Option:
A
Explanation
Total of 11 results = 11 × 50 = 550. First six total = 6 × 49 = 294, and last six total = 6 × 52 = 312. Adding gives 606, but the sixth result was counted twice, so the sixth result = 606 − 550 = 56.
