Question

As a nurse, part of your daily duties is to mix medications in the proper proportions for your patients. For one of your regular patients, you always mix Medication A with Medication B in the same proportion. Last week, your patient's doctor indicated that you should mix 140 milligrams of Medication A with 126 milligrams of Medication B. However this week, the doctor said to only use 81 milligrams of Medication B. How many milligrams of Medication A should be mixed this week?

_______milligrams

Answer 1

you can take a factor of 12 out of both denominators

90/9=x/7

by a variety of ways, including cross-multiplication, x=70 mg of Medication A.