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3 years ago

49/63 reduced fraction

2 answers:

5 0

To reduce a fraction, you must find what number goes into both the numerator and denominator evenly.

In this case, 7 goes into each number evenly.

All we need to do now is divide each number by 7.

$49\div7=7\\63\div7=9\\\\\frac{7}{9}$

marin [14]3 years ago

3 0

49 / 7 = 7
63 / 7 = 9,
You place 7 over 9 and you get your answer!

7/9

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2 years ago

to arrive at 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution. How many liters of eac

CaHeK987 [17]

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800 liters of 90% saline solution and 1200 liters of 40% saline solution should be used.

Step-by-step explanation:

Given:

At 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution.

Now, to find the number of liters of saline solution each should be used.

Let the liters of 90% saline solution mix be $x.$

And let the liters of 40% saline solution mix be $y.$

So, the total number of liters:

$x+y=2000.$

$y=2000-x\ \ \ ....(1)$

Now, the total percentage of saline solution:

$90\%\ of\ x+40\%\ of\ y=60\%\ of\ 2000$

$\frac{90}{100}\times x+\frac{40}{100}\times y=\frac{60}{100}\times 2000$

$0.9x+0.4y=1200$

Substituting the value of $y$ from equation (1) we get:

$0.9x+0.4(2000-x)=1200$

$0.9x+800-0.4x=1200$

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Subtracting both sides by 800 we get:

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Dividing both sides by 0.5 we get:

$x=800.$

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Now, substituting the value of $x$ in equation (1) to get the liters of 40% saline solution:

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$y=2000-800$

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Thus, the liters of 40% saline solution = 1200.

Therefore, 800 liters of 90% saline solution and 1200 liters of 40% saline solution should be used.

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3 years ago

If m1 =53 what is m3

Thepotemich [5.8K]

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Step-by-step explanation:

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2 years ago