<h3>Physicist mixes 60 liters of 20 % solution is mixed with 20 liters of 60 % to get solution 80 liters of 30% acid solution</h3>
<em><u>Solution:</u></em>
Let "x" be the liters of 20 % solution
Then, (80 - x) is the liters of 60 % solution
Final mixture is 80 liters of 30 % solution
Therefore,
"x" liters of 20 % solution and 80 - x liters of 60 % solution is mixed to get 80 liters of 30 % solution
Thus a equation is framed as:

Thus, 60 liters of 20 % solution
Then, (80 - x) = 80 - 60 = 20
20 liters of 60 % solution
4!! Because it makes the most sense
Answer:
−38
First do 10-16 which is -6
(7)(−6)+8/2
=−42+8/2
8/2 equals 4 so add -42 to 4
=−42+4
=−38
Answer:
If is the amount of salt in the tank at time , then the rate at which the amount of salt in the tank changes is given by
Let's drop the units for now. We have
We're given that the water is pure at the start, so , giving
So the amount of salt in the tank (in lbs) at time is
Step-by-step explanation:
Area of cube to be painted = 5 * 12^2 = 720
Number of gallons required = 720 / 450 = 1.6 gallons