IDNLearn.com is your trusted platform for finding reliable answers. Our platform offers reliable and comprehensive answers to help you make informed decisions quickly and easily.

One canned juice drink is 15% apple juice; another is 5% apple juice. How manyliters of each should be mixed to get 10L that is 10% apple juice?

Sagot :

We have:

Let x = 15% apple juice

Let y = 5% apple juice

If you need 10% of 10L of apple juice or one liter of pure whole apple juice. This is:

[tex]x+y=10[/tex]

One canned juice drink is 15% apple juice; another is 5% apple juice. This can be expressed by:

[tex]0.15x+0.05y=1[/tex]

Then we solve the system of equations:

From equation 1

[tex]\begin{gathered} x+y-y=10-y \\ x=10-y \end{gathered}[/tex]

Substitute x in the second equation:

[tex]\begin{gathered} 0.15(10-y)+0.05y=1 \\ Simplify \\ 1.5-0.15y+0.05y=1 \\ 1.5-0.1y=1 \\ solve\text{ for y} \\ 1.5-0.1y+-1.5=1-1.5 \\ -0.1y=-0.5 \\ \frac{-0.1y}{-0.1}=\frac{-0.5}{-0.1} \\ y=5 \end{gathered}[/tex]

Next, substitute y in x:

[tex]x=10-5=5[/tex]

Answer: We need 5L of each apple juice.