To build a 2.5m by 3m deck, a local building supply store chargess 1000 dolars for materials, plus carpenter's wage of $30/h. The store gives you an estimate of $1480 for the total cost. How much time is estimated for the carpenter to build the deck

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  1. Assuming no taxes, then the man-power charge is what is in excess of $1000, or $480. At $30 an hour, $480 will be equal to 480/30=16 hours.

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