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2 years ago

A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create 30 liters of a

Mathematics

2 answers:

Ksju [112]2 years ago

8 0

Answer: 20 liters

Step-by-step explanation: Let x represent the amount of 10% solution used. Let y represent the amount of 25% solution used. Since 30 liters of 15% solution are being made, our first equation is x + y = 30.Now we deal with the actual peroxide in each solution. x liters of 10% peroxide contain 0.1x liters of peroxide. y liters of 25% peroxide contain 0.25y liters of peroxide.30 liters of 15% peroxide contain 0.15 * 30 = 4.5 liters of peroxide. From this information, we can write our second equation.0.1x + 0.25y = 4.5We have a system of equations: x + y = 300.1x + 0.25y = 4.5Multiply the first equation by -0.25 and add to the second equation.-0.25x - 0.25y = -7.5 0.1x + 0.25y = 4.5-------0.15x = -3x = 20

kifflom [539]2 years ago

5 0

Answer: 20 liters

Step-by-step explanation:

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Airida [17]

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Step-by-step explanation:

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nika2105 [10]

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Step-by-step explanation:

Given data

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Troyanec [42]

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Step-by-step explanation:

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So basically, Marcel pays = (tuition and fees + cost of room and board)

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castortr0y [4]

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Answer:

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