Answer:0.5 hours
Step-by-step explanation:
Given
It takes two painters 5 hrs to finish painting a house
Here, no. of painters and no. of working hours are inversely related
So, [tex]\text{no. of Painters}\times \text{no. of working hours=work}[/tex]
Work is the same in both the cases
[tex]2\times 5=20\times \text{no. of working hours(x)}\\x=\dfrac{10}{20}=0.5\ \text{hrs}[/tex]
