draw

work

can

be

accomplish

pass by

seven

painter

exist

23

A few days. if

28

more

painter

join

this

group

eight

sky

After ...

begin

work

exist

this

work

, then

how

many

more

sky

be

need

arrive

accomplish

this

Work? If a painting project is completed by seven painters, it can be completed in 23 days. If 28 painters are added after 8 days of the project, how many days will it take to complete?

Answer: 23-8= 15

(7+28)/7=5

15/5=3

sky