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Rina8888 [55]
3 years ago
11

Fred bought a computer for 25% off the list price. If the list price is $2,428 how much did Fred spend?

Mathematics
1 answer:
anyanavicka [17]3 years ago
3 0

Answer:

Fred spent $1,821 dollars.

Step-by-step explanation:

First divide 25% by 100 and it gives you 0.25

2,428*0.25=607

2,428-607=1,821

He spent $1,821 dollars.

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4 0
3 years ago
How much pure water must be mixed with 10 liters of a 25% acid solution to reduce it to a 10% acid solution?
elena-s [515]

Suppose you add x liters of pure water to the 10 L of 25% acid solution. The new solution's volume is x + 10 L. Each L of pure water contributes no acid, while the starting solution contains 2.5 L of acid. So in the new solution, you end up with a concentration of (2.5 L)/(x + 10 L), and you want this concentration to be 10%. So we have

\dfrac{2.5}{x+10}=0.1\implies25=x+10\implies x=15

and so you would need to add 15 L of pure water to get the desired concentration of acid.

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4 years ago
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Step-by-step explanation:

3 0
3 years ago
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a square measuring 9 inches by 9 inches is cut from the corners of a square measuring 15 inches by 15 inches what is the area of
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Answer:

Step-by-step explanation:

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Answer: the answer is 180 in^{2}

Step-by-step explanation:

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