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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
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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cwrw238Best 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

GrazesBest 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

cwrw238Best 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

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

cwrw238Best 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

cwrw238Best ResponseYou've already chosen the best response.1
this is inverse proportionality less people  more hours
 one year ago

cwrw238Best 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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