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3 years ago

3/4 ÷ 1/4 what is the answer

Mathematics

2 answers:

koban [17]3 years ago

7 0

(3/4) / (1/4)...when dividing fractions, " flip " what u r dividing by, then multiply.

3/4 * 4/1 = 12/4 reduces to 3

scoray [572]3 years ago

4 0

The answer is here is three

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Step-by-step explanation:

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3 years ago

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BaLLatris [955]

Answer:

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Step-by-step explanation:

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3 years ago

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2 years ago

It takes machine A x hours to manufacture a deck of cards that machine B can manufacture in y hours. If machine A operates alone

nlexa [21]

Answer:

The expression that shows how long the two machines will operate simultaneously is:

$\frac{y(100x-z)}{x+y}$

Step-by-step explanation:

We know that:

x: hours to manufacture a deck of cards for machine A

y: hours to manufacture a deck of cards for machine B

z: hours that machine A operates alone

The number of decks manufactured only by machine A is:

$\frac{z}{x}$

So, the remaining decks are given by:

$100-\frac{z}{x}=\frac{100x-z}{x}$

Then, the combined rate of machines A and B would be:

$\frac{1}{x} +\frac{1}{y} =\frac{x+y}{xy}$

The work-rate formula is:

$Amount= Rate \times Time$

Hence, the time that the two machines work simultaneously is:

$Time=\frac{Amount}{Rate}$

$Time=\frac{Amount}{Rate} =\frac{\frac{100x-z}{x} }{\frac{x+y}{xy} } ={\frac{100x-z}{x} \times \frac{xy}{x+y}=\frac{y(100x-z)}{x+y}$

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3 years ago