The floor

The floor in the gym has dimensions of 6 * 12m. Parquets have a size of 30 * 20cm. Parquets are packed in packages of 50 pieces, and one parquet package costs 150 CZK. How many packages will we need? How much will it cost?

Correct answer:

n =  24
c =  3600 Kc

Step-by-step explanation:

$$\begin{gathered} a=6\text{m} \\ b=12\text{m} \\ x=30\text{cm}\to \text{m}=30:100\text{m}=0.3\text{m} \\ y=20\text{cm}\to \text{m}=20:100\text{m}=0.2\text{m} \\ p=50 \\ {S}_1=a\cdot b=6\cdot 12=72{\text{m}}^2 \\ {S}_2=p\cdot x\cdot y=50\cdot 0.3\cdot 0.2=3{\text{m}}^2 \\ n=S_1/S_2=72/3=24 \end{gathered}$$

$c=150\cdot n=150\cdot 24=3600\text{Kc}$

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