The following information is given for a certain town. Determine the number of $4$ m $3$ capacity trucks required for the city.

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$25,000$ residential septic tanks with average volume of $4$ cubic meters

$2,500$ commercial septic tanks with average volume of $6$ cubic meters

$90\%$ compliance target

$100\%$ of the residential and commercial buildings have containment

$100\%$ of tanks can bedesludged.

Desludging schedule of $3$ years with trucks working $5$ days in a week