Given:
An IV medication of 240 mL is to infuse at the rate of 60 mL/hr.
The total infusion time will be as follows:
Volume : Time
60 mL 1 hour
240 mL x hours
So, using the ratio and the proportions, and the cross product:
![x=(240*1)/(60)=4](https://img.qammunity.org/2023/formulas/mathematics/college/zky7d1jfwt696p51d0vkv5faje74i4k67w.png)
So, the answer will be: the total infusion time = 4 hours