- kmullis6

HELP! I'll fan and give a medal

- jamiebookeater

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- misty1212

HI!!

- misty1212

this is like the tenth time i have seen this question, maybe i should make a template for it

- misty1212

first off it says "Write an equation in one variable " and your equation has two , so lets start again

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## More answers

- kmullis6

Ok, other than that, am I on the right track?

- misty1212

secondly it has "find the total number of liters of apple juice and water in the jar. " which is stupid because you know the number of liters of water right?

- kmullis6

Yea, 1 right? And there's 3 of juice?

- misty1212

yeah so it is easy enough to solve in your head
one liter of water, 3 liters of juice makes 75% juice
but i guess you still have to come up with an equation that they like

- misty1212

lets see if we can do that, even though it is not necessary to write an equation to solve this rather simple question

- misty1212

we can call the number of liters of juice \(j\) if you like, since that is what you have to find

- misty1212

that means \[j+1\] is the total amount right?

- kmullis6

Yea

- misty1212

and since it has to be \(75\%\) juice we also know \(j\) must equal
it must be \(.75(J+1)\)

- misty1212

set
\[j=.75(j+1)\] and solve for \(j\)

- kmullis6

3

- misty1212

you will get \(j=3\) when you solve that, just like you knew at the beginning without resorting to this rather silly equation

- misty1212

yeah you got it

- kmullis6

Oh ok. So that's the equation?

- misty1212

that is one you can use, yes
and it does only have one variable

- kmullis6

j=.75(j+1)=3

- misty1212

oh no, not = 3

- misty1212

solve
\[j=0.75(j+1)\] and you will get \(j=3\) as the solution

- kmullis6

Ohh ok. Makes sense.

- misty1212

good!

- kmullis6

And just to make sure this would be part B?
j = .75(j + 1)
j = .75j + .75
j - .75j =.75
0.25j = .75
j = 3

- kmullis6

- anonymous

yes

- kmullis6

Thank you! @satellite73

- anonymous

yw

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