The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is-
A. 46
B. 50
C. 56
D. 58
Answer: Option C
Solution (By Examveda Team)
New observation= (47 × 7) - (45.5 × 6)
= 329 - 273
= 56
This Question Belongs to Arithmetic Ability >> Average
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