17.5 lbs x 20 min/lb = ??min
Notice how the unit we don't want (lbs) cancel leving the unit we want (time in min).
A turkey is to be cooked 20 minutes for every pound of weight. How long should the turkey be cooked if it weighs 17.5 pounds?
For every puiend the turkey must be cooked for 20 minutes. How many pounds are there? 17.5. How many minutes per pound? Which operation do you think would best answer this question?
350
350 WHAT? seconds? minutes? hours? light years? A number with no units doesn't mean anything.
350minutes
good. Always include units. Some profs count off if there are no units.
thanks