Step-by-step explanation:
16x+4x-20=0
20x-20=0
bring -25 to other side it will become 25
20x=20
x=20/20
x=1
The new mixture has a total volume of 5 L + 9 L = 14 L.
70% of the 5 L alcohol solution is alcohol, so that it contributed 3.5 L of alcohol to the mixture. The pure water contributed no alcohol. So in the mixture, the concentration of alcohol is
3.5 L / 14 L = 0.25, or 25%
First you need to know how much each guest will eat
In triangle ABC the Value of x is B=14
Hey just to let you now it came out blury