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Grazes
Group Title
if it takes 12 people 8 hours to do a certain job, how many hours would it take 3 people to do 1/4 of the same job?
 one year ago
 one year ago
Grazes Group Title
if it takes 12 people 8 hours to do a certain job, how many hours would it take 3 people to do 1/4 of the same job?
 one year ago
 one year ago

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julianmiddleton Group TitleBest ResponseYou've already chosen the best response.0
8 hours
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
find how long it takes 3 people to do the whole job then divide that by 4
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
@cwrw238 If Julian is correct, you would need to multiply by 4 instead of dividing.
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
for whole job time by 3 people = 12 * 8  = 32 hours 3  now divide that by 4...
 one year ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
But why not 12/8=3/x as a proportion?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
no  the number of hours for 3 people must take more time than when 12 people do it ( time 4)
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
this is inverse proportionality less people  more hours
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
h = k/p when h = 8, p = 12 8 = k/12 k = 96 so h = 96/p when p = 3 h = 96/3 = 32
 one year ago
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