SOLUTION: Nurse Levin added 50mL of dextrose to 1.8 liters of intravenous fluid but the doctor said a 10% concentration of dextrose is needed. Find the amount of dextrose that the nurse shou

Question 865571: Nurse Levin added 50mL of dextrose to 1.8 liters of intravenous fluid but the doctor said a 10% concentration of dextrose is needed. Find the amount of dextrose that the nurse should add.
The answer listed is 150mL but I cant figure out how they got it.

Found 2 solutions by richwmiller, MathTherapy:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Even though you are very rude, I will do the whole problem for you.
There are at least 4 ways to do this.
Start 50 mL of dextrose already added
from the view point of dextrose
1000m=1L,
50m+1.8L=1.85L,
50/1850=.02703
50/1850*(1850)+y=.1(1850+y)
y=150 mL
from the view point of non dextrose fluid
.90(1850+y)=1800/1850*(1850)
y=150 mL
or
start with 1.8 L
from view point of fluid
1*1800=.9*(1800+x)
x=200
Nurse Levin has already added 50
200-50=150
from viewpoint of dextrose
x=.10(1800+x)
x = 200
200-50=150 more

Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!
Nurse Levin added 50mL of dextrose to 1.8 liters of intravenous fluid but the doctor said a 10% concentration of dextrose is needed. Find the amount of dextrose that the nurse should add.
The answer listed is 150mL but I cant figure out how they got it.

1.8 L = 1,800 mL
Let additional amount of dextrose needed be D
Total amount of dextrose = 10% of ENTIRE MIXTURE (equation thus formed)
Then: 50 + D = .1(50 + 1,800 + D)
50 + D = .1(1,850 + D)
50 + D = 185 + .1D
D - .1D = 185 - 50
.9D = 135
D, or additional amount of dextrose = , or , or mL
RELATED QUESTIONS
Nurse Levin added 50mL of dextrose to 1.8 liters of intravenous fluid. But the doctor... (answered by josgarithmetic)
Here is the question exactly how it reads on the sheet. Nurse Levin added 50 mL of... (answered by richwmiller)
50 mL of dextrose was added to 1.8 liters of fluid. How much more dextrose needs to be... (answered by richwmiller)
A chemist has 50ml of a solution with 20% concentration of acid. How many ml of pure acid (answered by richwmiller)
The nurse has 4.25 liters of a solution that is 73% alcohol. How many liters of pure... (answered by stanbon)
how many fluid ounces of water should be added to 4 ml of a 1:4 concentration to make a... (answered by josgarithmetic)
What is the % w/v of 8g of dextrose in... (answered by Collinwilfixyouuprealnice,KMST,ikleyn)
What is A 50ml 40% acid solution is added to a 150ml 30% acid solution. What will be the (answered by ikleyn,greenestamps)
If 1,600 liters of 10% dextrose solution is made by combining a 20% dextrose solution... (answered by josmiceli)