If the daily dose is 0.5 mL and the pump delivers 0.25 mL per actuation, how many actuations are required per day?

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Multiple Choice

If the daily dose is 0.5 mL and the pump delivers 0.25 mL per actuation, how many actuations are required per day?

To determine how many times the pump must actuate, think of how many small doses add up to the daily amount. This is a simple division: divide the daily dose by the amount delivered per actuation. Here, the daily dose is 0.5 mL and each actuation delivers 0.25 mL. 0.5 mL ÷ 0.25 mL per actuation equals two. So you need two actuations to reach the daily dose. This also checks out because 0.25 mL × two actuations = 0.5 mL. If you did one actuation, you’d get only 0.25 mL; with three, you’d deliver 0.75 mL.

To determine how many times the pump must actuate, think of how many small doses add up to the daily amount. This is a simple division: divide the daily dose by the amount delivered per actuation. Here, the daily dose is 0.5 mL and each actuation delivers 0.25 mL. 0.5 mL ÷ 0.25 mL per actuation equals two. So you need two actuations to reach the daily dose. This also checks out because 0.25 mL × two actuations = 0.5 mL. If you did one actuation, you’d get only 0.25 mL; with three, you’d deliver 0.75 mL.

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