Question 974603
How much water to add to 5 liters of 90% juice to obtain 75% juice.


Let x be how much water to add.


Pure Juice:  5*(0.90) liters
Amount of Resulting lower conc. juice:  (5+x) liters
Concentration of resulting juice:  0.75, as a decimal fraction


{{{(5*(0.9))/(5+x)=0.75}}}