a doctor orders a dosage of 10 mL of medicine every 6 hours for 1 week. How many fluid ounces of medicine should be purchased? Round up to the next whole fluid ounce.
4 doses/day * 7 days * 10mL/dose * 1oz/29.6mL = 9.5 oz
or, 10 fl oz
10 * 4 * 7 = 280 mL
1 mL = 0.033814 oz.
280 * 0.033814 = 9.467 = 10 oz.
To calculate the quantity of fluid ounces of medicine that should be purchased, we need to consider the dosage frequency and the duration of the treatment.
First, let's calculate how many times the medicine should be taken in one week. Since the doctor orders a dosage every 6 hours, we need to determine how many intervals of 6 hours are in one week.
One day consists of 24 hours, and since there are 7 days in a week, the total number of hours in a week is 24 * 7 = 168 hours.
To find the number of 6-hour intervals in one week, we divide the total number of hours in a week by 6: 168 / 6 = 28.
This means the medicine should be taken 28 times in one week.
Next, we need to calculate the total volume of medicine required in one week. The doctor orders a dosage of 10 mL every 6 hours, so for 28 doses, the total volume of medicine needed is 10 mL * 28 = 280 mL.
To convert mL to fluid ounces, we can use the conversion factor of 1 fluid ounce = 29.5735 mL.
So, to calculate the quantity in fluid ounces, we divide the total volume in mL by the mL-to-fluid-ounce conversion factor: 280 mL / 29.5735 mL/fluid ounce = 9.4631 fluid ounces.
Since we need to round up to the next whole fluid ounce, the final answer is 10 fluid ounces of medicine should be purchased.