Answer:
6400
Step-by-step explanation:
its 6400 to the nearest hundred
30
6 times 5 is 30 and since its 6 per hour you just do it to five :)
Set up a proportion like this

=
So your proportion would be:

We put x for offices because they are asking for the number o offices a crew can paint in 12 hours, and also we don't know the number of offices they can paint in 12 hours
so we cross multiply and we get
6x=60, we got 60 by multiplying 12 and 5
Now we divide both sides by 6 and we get
x=10
S the crew can paint 10 offices in 12 hours.
He can make 18 and then he wouldn't have enough to make that 19th. You just take 28 and multiply it by 2, then divide it by 3. Or just multiply 28 by 2/3
Well,
35 - 15 = 20
43 - 26 = 17
The difference is that there 3 apart ( I just subtracted 20 with 17 and got 3)
Hope This Helps!!!
:)