A child receives a dose of 0.5 teaspoon of cough medicine every 8 hours. If the bottle contains 60 doses, how many days will the medicine last?

The bottle of medicine would last for 40 days because there are 24 hours in a day, and the child takes the medicine every 8 hours, so you would divide 24 by 8 which is 3. The child takes the medicine 3 times a day so if he/she takes. 5 teaspoons, you would multiply 3 by. 5 which is 1.5. So, 1.5 is how many ounces the child takes per day. Then, since the child has 60 doses, you would divide that by how many ounces the child takes daily, leading you to the quotient of 40. Therefore, the child medicine will last for 40 days.