Respuesta :
The simplest way to do this is too turn the fractions into decimals. 83.4 And 5.6. Then, subtract the decimals. You should get 77.8.
use proportions:
8 3/4 / 5/6 = x /1
8 3/4 = 35/4
x = 35/4 * 6/5
x = 210/20 = 10 1/2 acres in one hour