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The number of words maria typed varied directly with the amount of time she spent typing. if she typed 165 words in 3 minutes, how long would it take her to type 495 words?

Respuesta :

amendenhall
Dimensional analysis allows us to compute the answer:
[tex]\frac{165\text{ words}}{3\text{ minutes}}=\frac{495\text{ words}}{n}[/tex]
Cross multiply
[tex]n\cdot165\text{ words}=495\text{ words}\cdot3\text{ minutes}[/tex]
Divide
[tex]n=3\cdot\frac{495}{165}\text{ minutes}=3\cdot3\text{ minutes}=9\text{ minutes}[/tex]
It would take her 9 minutes.

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