Question

 It takes 4 people 2 days to paint a wall. How long would it take if we got 8 people to do it
​

Answer 1

Answer:

8 People can paint the wall in 1 day.

Step-by-step explanation:

Work duration and number of people are inversely proportional.  That is, more the people, less the duration required.

∴ $\frac{Number of people 1}{Number of people 2} = \frac{Duration 2}{Duration 1}$

∴ $\frac{4}{8} = \frac{Duration 2}{2}$

∴ Duration 2 = 1 day

∴ 8 People can paint the wall in 1 day.