How to build the equation for the word problem?

Hvordan kan vi hjælpe?

Anton Varich

17. november 2018 16:23

Hello! There is this problem that I have stumbled upon, but I can't seem to wrap my head around it or remember the approach you need to take for it. Overall, I struggle to solve it. The problem goes as follows:

Jack can unload the truck twice as fast as Shaun can. Together they can unload the truck in 5 hours. How long would it take each of them working alone to unload the truck?

You can just direct me to the appropriate video explaining a similar problem, that will suffice.

Nyt opslag

1 kommentar

Nimnath

29. november 2018 03:05
1

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Let load of truck be m (in kg).

Let speed of unloading of Shaun be x (kg/hour)

Then speed of unloading of Jack is 2x.

m/(2x+x) = 5 (hours) => m = 15x (kg)

If working alone:

Shaun = 15x/x = 15 (hours)

Jack = 15x/ 2x = 7.5 hours

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How to build the equation for the word problem?

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1 kommentar

Fandt du ikke det, du ledte efter?