Answer:
7.5 ml
Explanation:
A drug is available in 100mg/mL.
This means, there is
100mg of the drug in 1 ml
100mg = 1 ml
Step 1
We convert 100mg to g
1 mg = 0.001 g
100 mg = x
Hence,
x = 100 × 0.001g
x = 0.1 g
Hence,
We have 0.1g in 1 ml
Step 2
The patient needs 0.75 g of the drug. How many mL should be administered?
From step 1, we know that:
0.1g = 1 ml
0.75g = x
Cross Multiply
0.1g × x = 0.75g × 1 ml
x = 0.75g × 1 ml/0.1g
x = 7.5 ml
Therefore, 7.5 ml should be administered to the patient.