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How do you work out 1tr of water for 5 how much for 7 people

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\bf \begin{array}{ccllll} liters&folks\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 1&5\\ x&7 \end{array}\implies \cfrac{1}{x}=\cfrac{5}{7}\implies 7\cdot 1=x\cdot 5 \\\\\\ \cfrac{7}{5}=x
User RishiC
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