Work in factory

45 men can complete a work in 16 days, but after some days they started working 30 more men joined them and completed the remaining work in 6 days. How many days after the commencement of the job did 30 men join?

Correct answer:

d =  6

Step-by-step explanation:

w=45 16=720  w=45 d+(45+30) 6 720=45 d+(45+30) 6  45d=270  d=45270=6  d=6



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