Question 1009182
Jane has 12 litres of orange JUICE.


She needs 70 litres and the ratio is 1 litre of orange JUICE and 5 litres of water.


Does she have enough orange<b>?</b>




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Concentration as a fraction is  {{{1/6}}} Orange Juice.


x, litres Orange Juice
y, litres water


{{{system(x/70=1/6,x+y=70)}}}
If this makes good sense to you, then you are understanding.  The rest is algebra.  


If x is less than 12, then Jane does not have enough orange juice.



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If the concentration and the ratio were the confusing parts, then 1 litre of OJ and 5 litres of water make total of 6 liters.  The concentration as OJ is  {{{(1*partOJ)/(6*partsWater)=(1/6)OJ}}}.  The {{{x/70}}} shows amount of Orange juice as numerator and amount of what is the be prepared as denominator, the 70 litres total volume.