Solving a Word Problem: Preparing Special Eye Drops

  • Thread starter Thread starter Zed
  • Start date Start date
  • Tags Tags
    Eye Word problem
AI Thread Summary
To solve the problem of preparing 16 milliliters of eye drops with a 5% active ingredient using 10% and 1% solutions, two equations are established. The first equation represents the total active ingredient: 0.1x + 0.01y = 0.8, where x is the volume of the 10% solution and y is the volume of the 1% solution. The second equation accounts for the total volume: x + y = 16. By solving these equations simultaneously, the pharmacist can determine the required amounts of each solution. This method ensures the correct formulation of the eye drops for the patient.
Zed
Messages
6
Reaction score
0
Word problem !

Hi ,

This is a Hw question i have am stuck on i don't know how to solve it ...

A pharmacist is to prepare 16 milliliters of special eye drops for a glaucoma patient. The eye-drop solution must have a 5% active ingredient, but the pharmacist only has 10% solution and 1% solution in stock.


How much of 10% solution should be used to fill the prescription?

How much of 1% solution should be used to fill the prescription?


please help

thx
 
Physics news on Phys.org
convert to formulas:
The amount of active solution in each ingredient should sum to the total active solution:
x*.1 + y*.01 = 16*.05
The amount of each ingredition should sum to the total amount:
x + y = 16

Then solve.
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Chem/Math Help: Solving Glaucoma Rx
Replies
5
Views
4K
Solve Chem Word Problem: 16 mL 5% Eye Drops
Replies
3
Views
2K
Logarithm word problem, is there enough info?
Replies
12
Views
2K
Probability Word Problem: Aptitude Question
Replies
8
Views
2K
What is the correct solution for the temperature expansion problem?
Replies
3
Views
1K
Solving Physics Problem with Angles and Trigonometry
Replies
4
Views
1K
Using a Problem Solving Technique for a simple word problem
Replies
24
Views
3K
How should I solve this Diophantine equation word problem?
Replies
4
Views
2K
Voltage drop and current through each resistor
Replies
3
Views
2K
When can using a logarithm make solving an equation easier?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top