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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 :
Answer & Solution
Correct Answer:
Option
B
Let the new observation be = x
According to the question,
6 × 45.5 + x = 7 × 47
273.0 + x = 329
x = 329 - 273
x = 56
According to the question,
6 × 45.5 + x = 7 × 47
273.0 + x = 329
x = 329 - 273
x = 56
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