Final answer:
To complete the job with 5 mechanics in 4 days, we use the equation Number of mechanics x Number of days = Job done. By substituting the values given, we find that it would take approximately 6.67 days for 3 mechanics to complete the job.
Step-by-step explanation:
To solve this problem, we can use the equation:
Number of mechanics x Number of days = Job done
Given that 5 mechanics can complete the job in 4 days, we have:
5 mechanics x 4 days = 20 job done
Now, we can use this equation to find out how many days it would take for 3 mechanics to complete the job:
3 mechanics x Number of days = 20 job done
Solving for the number of days, we get:
Number of days = 20 job done / 3 mechanics
Number of days = 6.67 days
Therefore, it would take approximately 6.67 days for 3 mechanics to complete the job.