Answer: 40
Step-by-step explanation: Do 18/.45 then to check your work you can do 40 times .45
31/40
Step 1: .775= 775/1000
Step 2: 775/1000= 31/40
4 * 7 = 28.
28 + (-10) = 18
Therefore, the answer is 18.
If you want to check this, you can subtract 7 from 18 four times.
I think it would take Company B 15hrs to clear the land, and Company A would take 18hrs.
