Drying

The raw wood beam weighs 85 kg.
It is calculated that drying will reduce its weight in a ratio of 5:6. What will be the weight of this beam after drying?

Correct answer:

m₂ =  70.8333 kg

Step-by-step explanation:

$$\begin{gathered} m_1=85\text{kg} \\ {m}_2:m_1=5:6 \\ {m}_2=\frac{5}{6}\cdot m_1=\frac{5}{6}\cdot 85=\frac{5\cdot 85}{6}=\frac{425}{6}=\frac{425}{6}\text{kg}=70.8333\text{kg} \end{gathered}$$

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