<PRE><B>Question 585605</B>
A solution of 75% pesticide is to be mixed with a solution of 35% pesticide to form 440 liters of a 43% solution. How many liters of the 75% solution must be used?
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Equation:
active + active = active
0.75x + 0.35(440-x) = 0.43*440
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75x + 35*440 - 35x = 43*440
40x = 8*440
x = (1/5)*440
x = 88 liters (amt of 75% solution needed)
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440-x = 352 liters (amt. of 35% solution needed)
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Cheers,
Stan H.</PRE>