Final answer:
To administer 0.7 mg of medication with tablets of 0.21 mg each, divide 0.7 mg by 0.21 mg per tablet, resulting in 3.33 tablets. Since a fraction of a tablet cannot be given, round up to 4 tablets. Hence, more than 1 tablet should be administered.
Step-by-step explanation:
To determine the number of tablets that should be given, we use the concept of dosages and the conversion of units, a vital skill in medical calculations. Here, the order is to administer 0.7 mg of a medication, and the available tablets have a strength of 0.21 mg each.
To find out how many tablets are needed, we divide the total dosage required by the strength of each tablet:
Number of tablets = Total dosage required ÷ Strength per tablet
Number of tablets = 0.7 mg ÷ 0.21 mg per tablet
By calculating this, we obtain:
Number of tablets = 3.33, which means you would need slightly more than 3 tablets to achieve the desired 0.7 mg dosage. Since you cannot give a fraction of a tablet, you would typically round up to the nearest whole tablet, which would be 4 tablets.
Thus, the correct answer is (b) More than 1 tab.