Question 633812
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
How many gallons{{{highlight(x)}}} of a 4% acid solution should be mixed 
with 30 gallons of a 14% acid solution to obtain a mixture that is 8% acid?
  acid = acid
 .04x + .14·30 = .08(30-x)  |Solve for x, may first multiply thru by 100 if you like