<PRE><B>Question 544071</B>
25 litres of salt solution contain 6% salt. How many litres of water must be added so as to get a resultant solution containing 5% salt.
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Equation:
water + water = water
0.94*25 + x = 0.95(25+x)
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Multiply thru by 100 to get:
94*25 + 100x = 95*25+95x
5x = 25
x = 5 liters (amt. of water needed)
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Cheers,
Stan H.
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