Question : The table shows the sales of books from a school cooperative store on weekdays.
On how many days are the sales of books below the average sale?
Option 1: 2
Option 2: 3
Option 3: 1
Option 4: 4
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Correct Answer: 2
Solution :
Average sale = $\frac{100+200+550+800+450+600}{6} = 450$
Number of days having sales less than average sales 450 = 2 (Monday and Tuesday)
Hence, the correct answer is 2.
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