Answer: [tex]\dfrac{5}{7}[/tex] of an hour
Step-by-step explanation:
Given : It takes [tex]\dfrac{3}{7}[/tex] of an hour to paint [tex]\dfrac{3}{5}[/tex] of a room.
i.e. Time taken to paint [tex]\dfrac{3}{5}[/tex] of a room.= [tex]\dfrac{3}{7}[/tex] of an hour.
Using Unitary Method, we have
Time taken to paint one room.= [tex]\dfrac{3}{7}\times\dfrac{5}{3}[/tex] of an hour.
⇒Time taken to paint one room=[tex]\dfrac{5}{7}[/tex] of an hour.
Hence, it will take [tex]\dfrac{5}{7}[/tex] of an hour to paint one room.
