Question 1085908
The container has the dimensions 5,4,7
Sand is tipped into the container at a rate of 0.2m3 per minute 
How long does it take to completely fill the container with sand?
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Vol = 5*4*7 = 140 cubic cms. = 0.00014 cubic meters
t = Vol/rate
t = 0.00014/0.2
t = 0.0007 minutes = 42 milliseconds