Leah solved 40 arithmetic problems in 2 1/2 minutes. Which of the following best represents her unit rate?

A. 2 1/2 problems per minute

B. 8 problems per minute

C. 16 problems per minute

D. 40 problems per minute

Respuesta :

Answer:

Leah's unit rate is 16 problems per minute.

Step-by-step explanation:

To find her unit rate, we need to find how many problems she can do in 1 minute. Our current fraction is [tex]\frac{40}{2.5}[/tex]. We need to divide the top and bottom by 2.5 to get the rate per minute

[tex]\frac{40}{2.5}[/tex] = [tex]\frac{16}{1}[/tex]

Leah's unit rate is 16 problems per minute.

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