Board Ltd. produces 3 different skateboards, the details of which are as follows: Product code name P1 P2 P3 Selling price/unit 234 280 392 Labour hours/unit 1.5h 2h 3.5h Each labour hour has a cost of 16/h to the company. Material in kg/unit 5kg 5kg 7kg The cost for the material is 24/kg. Fixed cost allocated/unit 25 25 25 Monthly demand 200u. 400u. 200u. Since many workers have become sick, labour time is limited to 1,000 hours in the following month. Calculate the contribution per limiting factor for each of the three skateboards. What is the contribution per limiting factor for P1? (Insert just the number, without or hours - in case of decimal numbers round to the full number by applying mathematical rounding rules.)