Respuesta :

 first divide 90 by 4 to see how many words per minute

90 ÷ 4 = 22.5

 then multiply 22.5 by 10 to get your answer

so your answer is;

225 words per 10 minutes

Answer:

C. 225 words

Step-by-step explanation:

90 / 4 = 22.5

22.5 x 10 = 225 words