Bathroom tile area

My neighbors are remodeling their apartment. My neighbor let me see her new bathroom. It is a rectangle with dimensions of 2 m and 2.5 m. It has a bathtub with dimensions of 150 cm and 60 cm. The rest of the floor is covered with beautiful tiles. How many square meters are the tiles?

Final Answer:

x =  4.1 m²

Step-by-step explanation:

$$\begin{gathered} a=2\text{m} \\ b=2.5\text{m} \\ x=150\text{cm}\to \text{m}=150:100\text{m}=4.1\text{m} \\ y=60\text{cm}\to \text{m}=60:100\text{m}=0.6\text{m} \\ {S}_1=a\cdot b=2\cdot 2.5=5{\text{m}}^2 \\ {S}_2=x\cdot y=4.1\cdot 0.6=\frac{9}{10}=0.9{\text{m}}^2 \\ x=S_1-S_2=5-0.9=4.1{\text{m}}^2 \end{gathered}$$

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