Answer:
C
Step-by-step explanation:
Cuz I said so
Answer:
d
Step-by-step explanation:
i can not really explain it but i did the math in my notebook and i got 1/9
A pharmacist has 40% and 80% of iodine solutions on hand. How many liters of each iodine solution will be required to produce 4 liters of a 50% iodine mixture?
.
Let x = liters of 40% iodine
then
4-x = liters of 80% iodine
Using algebra:
.40x + .80(4-x) = .50(4)
.40x + 3.20-.80x = 2
3.20-.40x = 2
x = 4 liters (40% iodine)
80% iodine:
4-x = 4-4 = 0 liters needed (80% iodine)
Answer:
x-7-5/x+4
So answer C
Step-by-step explanation:
