Question

A contractor needs to decorate 16 rooms. He knows that 3 people can decorate a
room in 2 hours. He needs all the work to be done in 8 hours. How many people does
he need for the job?

Answer 1

Answer:

Step-by-step explanation:

Assuming all painters paint at the same rate let P = speed of a single painter

speed = distance/time

4 P = 1 House / 10 Days

P = 1 House / 40 Days

Let T = Time it takes for five painters.

5 P = 1 House / T

5(1/40) = 1 /T

1/8 = 1 /T

T = 8 Days