You need to add 2 L of the 75% mixture to get a mixture that is 60% antifreeze.
<h3>What is an antifreeze?</h3>
Anti freeze is a substance that is added in order to prevent a liquid from freezing. An antifreeze is usually an ionic substances that is used during the winter to prevent the freezing of a liquid.
Now;
Forming the equation;
0.75*x+0.5*3=0.6(3+x)
Hence;
0.75*x+1.5=1.8+0.6x
Therefore;
0.75x-0.6x=1.8-1.5
We obtain;
0.15x=0.3
Then;
x=2L
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Answer: ![x\geq 88](https://tex.z-dn.net/?f=x%5Cgeq%2088)
This means that he has to save at least $88 or more to have enough money.
Step-by-step explanation:
He has $37 and he needs to save more (+) but we don't know how much more that is, so that's why that is our unknown value. (x). The sum of them has to be at least 125 or greater.
![37+x\geq 125](https://tex.z-dn.net/?f=37%2Bx%5Cgeq%20125)
Subtract 37
![x\geq125-37](https://tex.z-dn.net/?f=x%5Cgeq125-37)
![x\geq 88](https://tex.z-dn.net/?f=x%5Cgeq%2088)
You got to multiple every # : 8.5×4×11= 375 cubed
The perimeter is 18 meters