Respuesta :
let
x----------> number of electricians
y---------> number of days to do the job
we know that
y=k/x
k is the constant of variation
for x=18 y=35
35=k/18-----> k=630
so
y=630/x
for x=28
y=630/28----> y=22.5 days
the answer is
22.5 days
x----------> number of electricians
y---------> number of days to do the job
we know that
y=k/x
k is the constant of variation
for x=18 y=35
35=k/18-----> k=630
so
y=630/x
for x=28
y=630/28----> y=22.5 days
the answer is
22.5 days