Considering the problem and mathematical model, how much total profitability would increase if we had 2 kilograms more sugar?

A restaurant makes Coffee Cakes and Danish Pastries. These products main ingredients are flour and sugar. There are 25 kg. of flour and 16 kg. of sugar available per day, and the demand for coffee cake is 5 per day. 5 kgs of flour and 2 kgs of sugar are required to make a pan of Coffee Cakes, and 5 kgs of flour and 4 kgs of sugar are required to make a pan of Danish Pastry. A pan of Coffee Cakes has a profit of $1, and a pan of Danish Pastry has a profit of $5. In order to maximize profit, the model is given below:

Max Z = 1X₁ + 5X₂

subject to:

5X₁ + 5X₂ <= 25

2X₁ + 4X₂ <= 16

X₁ <= 5

X₁ , X₂ >= 0