Solution A is 40% salt and Solution B is 80% salt. If you have 30 ounces of solution A and 60 ounces of solution B, in what ratio could you mix Solution A with Solution B to produce 50 ounces of a 50% salt solution?  Choose the correct answer:	A) 6:4	B) 6:14	C) 4:4	D) 4:6	E) 3:1
Forget the volumes for the time being.   You have to mix 20% and 80% solutions to get 50%. This is very straight forward since 50 is int he middle of 20 and 80 so we need both solutions in equal quantities. If this doesn't strike, use   w1/w2 = (A2 - Aavg)/(Aavg - A1)   w1/w2 = (80 - 50)/(50 - 40)= 
<gadget id="calculator">(80 - 50)/(50 - 40)</gadget>
<output>3</output>
3/1   So the volume of the two solutions will be equal. Answer has to be 3:1.   3:1
<result>E</result>
Solution A is 40% salt and Solution B is 80% salt. If you have 30 ounces of solution A and 60 ounces of solution B, in what ratio could you mix Solution A with Solution B to produce 50 ounces of a 50% salt solution?