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The table shows the number of words Marla can type in a given time.
Time
(minutes)
Number of
Words

5 | 140
10 | 280
15 | 420
20 | 60

What is Maria's typing rate?
A. 21 words per minute
B. 28 words per minute
C. 84 words per minute
O D. 140 words per minute

Respuesta :

the answer is b, 28 words per minute
you use the equation speed = distance/time so in this case you could just take the information from the first source and do 140/5 which = 28