Milk

At the kindergarten, every child got 1/5 liter of milk in the morning and another 1/8 liter of milk in the afternoon. How many liters were consumed per day by 20 children?

Correct answer:

x =  6.5 l

Step-by-step explanation:

$$\begin{gathered} n=20 \\ d=\frac{1}{5}+\frac{1}{8}=\frac{8}{40}+\frac{5}{40}=\frac{8+5}{40}=\frac{13}{40}=0.325\text{l} \\ x=n\cdot d=20\cdot \frac{13}{40}=\frac{20\cdot 13}{40}=\frac{260}{40}=\frac{13}{2}\text{l}=6.5\text{l} \end{gathered}$$

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