If it takes 5 identical firetrucks 5 minutes to pump 5 kiloliters of water onto a fire, how long will it take 8 firetrucks pump 8 kiloliters? Hint: the answer isn't 8 minutes.

What is the value of \(x\) that satisfies the proportional equation \[(5x-13):(6x-8)=4:5?\]

If Calvin paid \(\$5\) for \(7\) pencils, how much would he pay for \(56\) pencils?

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