#7) 200 mg
The dose (d) is proportional to amount of fluid received
d/(600 mL) = (400 mg)/(1200 mL)
d = (600 mL)(400 mg)/(1200 ml)
d = 200 mg
The patient received 200 mg of drug.
#8) 120 mg
750 ml 300mg
300 ml x mg
750 / 300 = 300 / x
x = (300 x 300) / 750 = 120 m
