Petpetviz
Answered

The number of day it takes to complete a construction job varies inversely as the number of men assigned to do the job. If it takes 3 months for 30 men to complete the house construction project, how long would it take for 50 men to do the job?

Sagot :

Rmmerencillaviz
construction job = k divided by number of men (k=constant of variation)
let c = construction job,
     n = number of men
     x be the unknown

3 = k/(30) ; k = 90
so, x = 90/50
x = 1.8

50 men takes 1.8 months to do the job..