Answer:
You will have 40 mins before 100%
Step-by-step explanation:
Let X = ml's of 3% hydrochloric acid and Y = ml's of 10% hydrochloric acid
Add X and Y to get the total milliliters:
X + Y = 175
Now multiply the quantities by their percentages go get the 6% required:
0.03x + 0.10y = 0.06(175)
Rewrite the first equation as x = 175 -y
Now replace x in the second equation and solve:
0.03(175-y) + 0.10y = 0.06(175)
Simplify:
5.25 - 0.03y + 0.10y = 10.5
Combine like terms:
5.25 +0.07y = 10.5
Subtract 5.25 from both sides:
0.07y = 5.25
Divide both sides by 0.07:
y = 5.25 / 0.07
y = 75
Now you have y solve for x:
x = 175-y = 175 - 75 = 100
You need 100 ml's of the 3% solution and 75 ml's of the 10% solution.
Final Answer is 4n-32/(n-4)(n+4)
Answer: The amount that they made together is 130,640 The amount that the agency made is 20,240
Step-by-step explanation:
Answer:
13,811 + 5 = 13816
13816 / 11 = 1,256
The number to add is 5
Step-by-step explanation: