The piglet

The weight of the piglet regularly grew by five kilograms for four months. Determine the proportion by weight of the piglet each month if the first weighed 35 kg.

Correct answer:

r₁ =  8:7
r₂ =  9:8
r₃ =  10:9
r₄ =  11:10

Step-by-step explanation:

$$\begin{gathered} m_0=35\text{kg} \\ d=5\text{kg} \\ {m}_1=m_0+d=35+5=40\text{kg} \\ {r}_1=m_1/m_0=40/35\approx 1.1429=8:7 \end{gathered}$$

$$\begin{gathered} m_2=m_1+d=40+5=45\text{kg} \\ {r}_2=m_2/m_1=45/40=1.125=9:8 \end{gathered}$$

$$\begin{gathered} m_3=m_2+d=45+5=50\text{kg} \\ {r}_3=m_3/m_2=50/45\approx 1.1111=10:9 \end{gathered}$$

$$\begin{gathered} m_4=m_3+d=50+5=55\text{kg} \\ {r}_4=m_4/m_3=55/50=1.1=11:10 \end{gathered}$$

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