Answer:
Two doses of 476,2716mg.
Step-by-step explanation:
The information that we have is:
- Child's weight: 70 pounds.
- The number of doses: two.
First, we have to convert pounds to kilograms using the rule of three.
70 pounds x 0.453592 kg = 31.75144 kg
1 pound
Now we know that a child needs 30 mg of the medication per kilogram, so for 31.75144 kg, how much medication the child needs?
We have another rule of three
30mg x 31.75144= 952.5432 mg
1kg
The total dose for a child that weighs 70 pounds is 945mg. As he needs two equally divided doses, we have to divide the dose in half.
945mg÷2= 476.2716 mg