The average marks obtained by 22 candidates in an examination are 45. The averag

Question

The average marks obtained by 22 candidates in an examination are 45. The average marks of the first 10 candidates are 55 and those of the last eleven are 40. The number of marks obtained by the eleventh candidate is

Options:

A . 0

B . 45

C . 47.5

D . 50

Answer: Option A
Answer: (a)Marks obtained by eleventh candidate = 22 × 45 – (10 × 55 + 11 × 40) = 990 – (550 + 440) = 990 – 990 = 0

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