4 doses/day * 7 days * 10mL/dose * 1oz/29.6mL = 9.5 oz
or, 10 fl oz
or, 10 fl oz
1 mL = 0.033814 oz.
280 * 0.033814 = 9.467 = 10 oz.
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.