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Ksenya-84 [330]
3 years ago
14

Part A

Mathematics
1 answer:
vlabodo [156]3 years ago
8 0

Answer:

  • Part A  Option B
  • Part B   5.71 l and 4.29 l

Step-by-step explanation:

<h3>Part A</h3>

Let x be the volume of 5% solution

<u>Then the volume of 40% solution is </u>

  • 10 - x

<u>Amount of acid is 10*0.20 for resultant solution, x*0.05 for 5% solution and (10- x)*0.40 is for 40% solution:</u>

  • 10*0.20 = x*0.05 + (10 - x)*0.40

Correct equation is B.

<h3>Part B</h3>

<u>Solving</u>

  • 2 = 0.05x + 4 - 0.4x
  • 0.35x = 2
  • x = 2/0.35
  • x = 5.71 l of 5% solution

and

  • 10 - x = 10 - 5.71 = 4.29 l of 40% solution
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