It took 6 people to paint several offices in 5 days. how many more people need to be hired to complete the same job in 3 days

4 more people

Step-by-step explanation:

6 people can paint several offices in 5 days

1 people can do same work in = 6 × 5 = 30 days

To complete the same job in 3 days people need =

                                                                = 10 people

Need to hire people = 10 - 6 = 4 people

4 more people need to be hired to complete the same job in 3 days.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6