PracticeQuiz content is free on an ad-supported model.
Unfortunately, we can't support ad blocker usage because of the impact on our servers. If you'd like to continue, please disable your ad blocker and reload page.
It is the middle of a service and your walk-in refrigerator has broken down. You call the repairman to fix the problem. How much time can the foods in the refrigerator hold (above 40 °F) before you need to throw them away?