## kmullis6 one year ago HELP! I'll fan and give a medal

1. misty1212

HI!!

2. misty1212

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

3. misty1212

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

4. kmullis6

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

5. 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?

6. kmullis6

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

7. 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

8. misty1212

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

9. misty1212

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

10. misty1212

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

11. kmullis6

Yea

12. misty1212

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

13. misty1212

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

14. kmullis6

3

15. misty1212

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

16. misty1212

yeah you got it

17. kmullis6

Oh ok. So that's the equation?

18. misty1212

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

19. kmullis6

j=.75(j+1)=3

20. misty1212

oh no, not = 3

21. misty1212

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

22. kmullis6

Ohh ok. Makes sense.

23. misty1212

good!

24. 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

25. kmullis6

@misty1212

26. anonymous

yes

27. kmullis6

Thank you! @satellite73

28. anonymous

yw