Carbohydrates 80435

Bread contains an average of 52% carbohydrates, and apples have 12% carbohydrates. How many apples weighing 220g would you have to eat to get as much carbohydrate as 150g of bread?

Correct answer:

n =  3

Step-by-step explanation:

$$\begin{gathered} r_1=52\%=\frac{52}{100}=\frac{13}{25}=0.52 \\ {r}_2=12\%=\frac{12}{100}=\frac{3}{25}=0.12 \\ {m}_2=220\text{g} \\ {m}_1=150\text{g} \\ s=m_1\cdot r_1=150\cdot 0.52=78\text{g} \\ s=(n\cdot m_2)\cdot r_2 \\ n=\frac{s}{m_2\cdot r_2}=\frac{78}{220\cdot 0.12}=3 \end{gathered}$$

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