<PRE><B>Question 439311</B>
 How much water must you add to 250.0mL of orange juice concentrate if you want the final juice to be 15.0% of the strength of the original? 

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Equation:
OJ + OJ = OJ
1.00*250 + 0*x = 0.15(250+x)
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Multiply thru by 100 to get:
100*250 = 15*250 + 15x
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15x = 85*250
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x = 1416.67 mL (amt of water needed)
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Cheers,
Stan H.</PRE>