For A- make a proportion
150. 675
—— = ——
8. x
Next cross multiply
150x=5400
Then solve for x
150x/150 5400/150
x=36
It will take 36 minutes to fill 675 bottles
For B- Same steps as A except replace the x in the proportion with 12 and place x in the place of 675
150. x
—— = ——
8. 12
Cross multiply
8x=1800
8x/8. 1800/8
x=225
The machine makes 225 bottles in 12 hours
For C- Since you know that the the factory makes 225 bottles and that is 25 percent of what the factory produces, you can make a proportion
225. 25%
—— = ——
x. 100%
Cross multiply
25x=22,500
25x/25=22,500/25
x=900
The factory produces 900 bottles