Answer:
20/3 ounces of water is added.
Step-by-step explanation:
how many ounces of pure water should be added to 20 ounces of 40% solution of muriatic acid to obtain a 30% solution of muriatic acid?
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The acid is 40% of 20 ounces = 8 ounces.
0.4*20 = 8
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That same 8 ounces is to be 30%. The water will be the other 70%.
8/30 = x/100
30x = 800
x = 80/3, the total amount of the solution.
We started with 20, so 80/3 - 20 = 20/3
20/3 ounces of water is added.
In triangle the sum of the angles =180,and we have angle=124 so,180-124=56.
X=4
See the attachment below gor graph
hope that helps
I dont know if i did this right but here
x1 = 9.5 y1 = 0
10.25 x 4
20.5 x 2
41 x 1
Hope this helps :)
