SOLUTION: how much water should we add to 45 % solution of 250 grams to get 10% solution

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Question 1038954: how much water should we add to 45 % solution of 250 grams to get 10% solution
Found 4 solutions by Alan3354, addingup, ikleyn, MathTherapy:
Answer by Alan3354(69443)   (Show Source):
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how much water should we add to 45 % solution of 250 grams to get 10% solution
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45% of 250 = 0.45*250 = 112.5 grams
If that's 10%, then 100% = 1125 grams.
1125 - 250 = 875 grams of water added.
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Add W grams of water.
45*250 + W*0 = 10*(250 + W)
11250 = 2500 + 10W
W = 875 grams

Answer by addingup(3677)   (Show Source):
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0.45 = 250
0.10 = x
Inverse proportion:
C1/C2 = Q2/Q1
where C is Concentration and Q is quantity. And the unknown quantity Q2 I am going to call x:
0.45/0.10 = x/250
4.5 = x/250 multiply both sides by 250:
1125 = x flip it, it looks better:
x = 1125 grams you will add to dilute the solution to 10%

Answer by ikleyn(52788)   (Show Source):
You can put this solution on YOUR website!
.
The lesson Mixture problems, Problem 4 is your sample.

Read it attentively.

Then solve your problem by substituting your data.

Read all associated lessons and become an expert in mixture word problems.

Answer by MathTherapy(10552)   (Show Source):
You can put this solution on YOUR website!

how much water should we add to 45 % solution of 250 grams to get 10% solution

Amount of water: