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%.

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45.36 feet per second.

step-by-step explanation:

to find the most accurate determination for the number of feet per second tyrone traveled on his way to work let us convert miles to feet and minutes to seconds.

1 mile = 5280 feet.

1 minute = 60 seconds.

now we will divide 158400 by 3492 to find the most accurate determination for the number of feet per second tyrone traveled on his way to work.

therefore, tyrone traveled on his way to work at the rate of 45.36 feet per second.