To work out what percent of 60 is 150 just do the following:
150 / 60 = 2.5
2.5 x 100 = 250
Therefore 150 is 250% of 60. Hope I helped!
Q α r
q=kr
thus
k=q/r
when r=20, q=76
hence
k=76/20=
q=76/20r
when r=45 the value of q will be:
q=76/20×45
q=171
You will need 252 mL of pure water to obtain 0.25 mL of the desired 25% solution.
If we add X amount of water to the solution, the total amount of solution is 375+X.
And that must be 25%.
<h3>
What is the amount of solute in the current solution?</h3>
The amount of solute in the current amount of solution is
0.6(375)=225.
That amount won't change by adding water.
So we set up the equation so that the amount of solute divided by the new total amount of solution equals 25%.
225/(375+X)=0.25
cross multiply and solve
225/0.25=(375+X)
900-375=X
X=525
The pure water will you need to add to obtain the desired solution is 525.
Then we check 225/(375+525)=0.25.
To learn more about the mixture problem visit:
brainly.com/question/24647756
#SPJ1
Answer:
x=13
Step-by-step explanation:
15x-15
15*13=195
195-15=180
