Q.

The average attendance in a school for the first 4 days of the week is 30 and for the first 5 days of the week is 32. The attendance on the fifth day is

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a

36

b

38

c

32

d

40

answer is B.

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Detailed Solution

Attendance on the fifth day = 32 x 5 - 30 x 4 = 160 - 120 = 40

 

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