How much 20% solution needs to be added to a 60% solution to make 400 ml of a 40% solution
1 answer:
Let be the volume of 20% solution,
the volume of the 60% solution. We want a total volume of 400 mL in the final mixture, so
Each mL of either solution will contribute a corresponding concentration, and in the final mixture we want the 400 mL to have a 40% concentration, which means we should also have
Solve the system and we get .
You might be interested in
Well lets set up an equation 2 problems per second yields
for every second, x.
Now if we want the problems solved, y it will be equal to this product so
Now lets plug in 60 seconds, which is 1 minute
It can solve 120 algebra problems in 1 minute.
for every second, x.
Now if we want the problems solved, y it will be equal to this product so
Now lets plug in 60 seconds, which is 1 minute
It can solve 120 algebra problems in 1 minute.