Tasha needs 75 liters of a 40% solution of alcohol. she has a 20% solution and a 50% solution available. how many liters of the 20% solution and how many liters of the 50% solution should she mix to make the 40% solution?

Tasha should mix 25 liters of 20% solution and 50 liters of 50%.

Step-by-step explanation:

Let x liters be the amount of 20% solution  and y liters be the amount of 50% solution Tasha takes.

1. Tasha needs 75 liters of a 40% solution of alcohol. Then

x + y = 75

2. There are

In total, of alcohol that is 30 l, so

0.2x + 0.5y = 30

3. Solve the system of two equations:

From the first equation:

Substitute it into the second equation

Tasha should mix 25 liters of 20% solution and 50 liters of 50%.

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice