Can someone please help me understand how to solve this problem?
A patient is given exactly 750 milliliters of a mixture of two medications daily. Medication A contains 40 percent pain killer and medication B contains 20 percent pain killer. If the patient receives exactly 215 milliliters of pain killer daily, how many milliliters of medication B are in the mixture?
The correct answer is D.
Thanks so much in advance.
you need to solve a system of equations here for A and B
A + B = 750
0.4*A + 0.2*B = 215