<PRE><B>Question 578497</B>
A grocery store has 12 lbs of a mixture of nuts and dried fruit that is 10% banana chips. If they mix additional banana chips to bring the new mixture up to 25%, how many pounds of banana chips should they add? 
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Equation:
chips + chips = chips
0.10*12 + x = 0.25(12+x)
Multiply thru by 100 to get:
10*12 + 100x = 25*12 + 25x
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75x = 15*12
x = (1/5)12
x = 2.4 lbs (amt. of banana chips to be added)
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Cheers,
Stan H.</PRE>