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Question

How many minutes does it take John to type $$y$$ words if he types at the rate of $$x$$ words per minute? 


A
xy
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B
yx
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C
xy
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D
60xy
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E
y60x
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Solution

The correct option is B $$\displaystyle \frac { y }{ x } $$
$$x$$ No. of words John type in $$1$$ minute
$$\therefore $$ $$1$$ word John type in $$\dfrac { 1 }{ x } $$minute
$$\therefore $$ $$y$$ No. of words John type in $$\dfrac { y }{ x } $$minute

Mathematics

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