Apples 29

In a fruit market, apples are currently £4 per kilogram. If you buy ten kilograms of apples, you will receive three-tenths of the total price. How much will you pay for ten kilograms of apples at the market?

Correct answer:

x =  28 L

Step-by-step explanation:

$$\begin{gathered} c=4\text{L/kg} \\ m=10\text{kg} \\ r=\frac{3}{10}=0.3 \\ {x}_1=m\cdot c=10\cdot 4=40\text{L} \\ {x}_2=r\cdot x_1=\frac{3}{10}\cdot 40=\frac{3\cdot 40}{10}=\frac{120}{10}=12\text{L} \\ x=x_1-x_2=40-12=28\text{L} \end{gathered}$$

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