I don’t know how to solve this problem. The conversions are confusing to me and don’t know how to start

Question

A patient is required to take an IV drug for cancer treatment. The required dosage is 5.0 mg drug her lb patient body weight every day. Each of the bags of the drug contains 250 mg drug. If you are treating a 150lb patient,How many bags of the drug are needed each day.

Answer 1

Given:

Dosage 5 mg drug/day/lb patient

250 mg drug/bag

150 lb patient

150 lb patient X 5 mg drug/day/ lb patient = 750 mg drug/day required

750 mg drug/day/250 mg drug/bag = 3 bags/day

3 bags per day are required.