extrect1726 extrect1726
  • 26-02-2020
  • Mathematics
contestada

How many liters of a 20% acid solution should be added to 10 liters of a 30% acid solution to obtain a 25% acid solution?

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wolf1728
wolf1728 wolf1728
  • 26-02-2020

Answer:

We have 10 liters of 30% acid

We want to add "x" liters of 20% acid to make a 25% acid solution.

.30 * 10 + .20x = .25 * (10 +x)

3 + .20x = 2.5 + .25x

.5 = .05 x

x = 10 liters

CHECKING THE CALCULATIONS:

10 liters of 30% acid + 10 liters of 20% acid =

20 liters of 25% acid

Step-by-step explanation:

Answer Link
Awesomebatman28 Awesomebatman28
  • 25-01-2021

Answer:

10 liters

Step-by-step explanation:

;)

Answer Link

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