Robinsons Mall sells 2 types of bikes, Type 1 and Type 2. Robinson owner pays P800.00 and P1,400.00 for each one unit of Type 1 bike and Type 2 bike respectively. One unit of type 1 bike yields a profit of P200.00 while a unit of type 2 bike yields a profit of P300. Robinsons Mall owner estimates that no more than 2000 bikes will be sold every month and the owner does not plan to invest more than P20,000 in inventory of these Bikes. How many units of each type of bikes should be stocked in order to maximize the total monthly profit?