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  1. A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is:
    2. A.

    250
    B.

    276
    C.

    280
    D.
    285

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    Answer : Option D

    Explanation :

    Since the month begins with a Sunday, to there will be five Sundays in the month.

     

    Required average = \( \frac { 510*5+240*25 } { 30 }\)

                         

                                  =  \(\frac { 8550 } {3 } \)

                                 

                                 =  285 

     

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