Fifteen movie theatres average 600 customers per theatre per day.If six of the theatres close down but the total theatre attendence stays the same,then the average daily attendence per theatre among the remaining theatres is
average daily attendence per theatre among the remaining theatres to be x
15 $$\times 600$$ = 9 $$\times x$$
$$\frac{15 \times 600}{9} = x$$
x = 1000
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