math word problem

Organizers for a local race plan to provide 4 water bottles for each runner, 328 people have signed up to run in the race which of the following equations represent the this situation and what does the variable x represent

A) 328/x=4, x=number of water bottles needed my answer just check that all

B)x/328=4,x=total number of runners

C)x/4=328;x=total number of water bottles needed

D)4/x=328;x=total number of runners

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  1. look at the units.
    4 bottles/runner
    328 runners

    bottles/runner * runners = bottles
    bottles / (bottles/runner) = runners
    bottles / runners = bottles/runner

    so, see which of those equations makes the units work out right

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