Question

a contractor who had a workforce of 560 persons undertook to complete up for son of a stadium in 9 months he was asked to complete the job in 7 months how many extra persons had hi to employee​

Answer 1

Answer:

160

Step-by-step explanation:

this is an example of inverse proportion:

hence,

let total workforce required to complete in 7 months=x

560*9=x*7

x=720

extra workforce= 720-560

                         =160