Nuts

500 g of hazelnuts cost 150 Kč, 2 kg of walnuts cost 280 Kč, and 20 dag of peanuts cost 32 Kč.

1. How much do we pay for 150 g of peanuts?
2. How many grams of walnuts cost 42 Kč?
3. How much do we pay for 150 g of a mixture that the seller blends for us in equal parts from these three types of nuts?

Final Answer:

a =  24 Kc
b =  300 g
c =  30 Kc

Step-by-step explanation:

$$\begin{gathered} m=150\text{g} \\ a=m\cdot 32/200=150\cdot 32/200=24\text{Kc} \end{gathered}$$

$b=42\cdot 2000/280=300\text{g}$

$$\begin{gathered} m_1=m/3=150/3=50\text{g} \\ c=m_1\cdot 150/500+m_1\cdot 280/2000+m_1\cdot 32/200=50\cdot 150/500+50\cdot 280/2000+50\cdot 32/200=30\text{Kc} \end{gathered}$$

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