Answer:
It will take 14 painters 18 days.
Step-by-step explanation:
It was given that, 12 painters paint the walls of a school in 21 days.
If the number of painters increased to 14, then it will take less number of days to paint the walls of the school, working at the same rate.
If less, then more will divide.
The number of days
[tex]=\frac{12\times21}{14}[/tex]
[tex]=\frac{252}{14}[/tex]
[tex]=18[/tex]
