40 liters of a mixture is created by mixing Liquid P and Liquid Q in the ratio 5:3. How many liters of Liquid Q must be added to make the ratio 5:6? Choose the correct answer.
A) 5	B) 8	C) 10	D) 12	E) 15
Let x be the amount of liquid Q to be added.   (3/8)*40 + x = (6/11)*(40+x)   1320 + 88x = 1920 + 48x   40x = 600   x = 15   The answer is 15.
<result>E</result>
40 liters of a mixture is created by mixing Liquid P and Liquid Q in the ratio 5:3. How many liters of Liquid Q must be added to make the ratio 5:6?