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1 March, 09:29

Carlos read 144 pages in 3 hours. His little sister read 24 pages in 1 hour. carlos's average reading rate is what percent of his sisters average rate?

A) 7.5%

B) 50%

C) 75%

D) 200%

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Answers (2)
  1. 1 March, 12:43
    0
    The correct answer should be D because it is double his sisters reading speed.
  2. 1 March, 12:47
    0
    Hello! So Carlos' sister reads an average of 24 pages in 1 hour. He reads 144 pages in 3 hours. To find the unit rate Carlos reads, let's do some division. 144/3 is 48. Carlos reads an average of 48 pages in 1 hour. If you use mental math, 48 is double the amount of 24. 200% is just simply 2. 24 * 2 is 48. D is the only one that shows an answer that even fits for this scenario. Carlos' average reading rate is 200% of his sister's. The answer is D: 200%.
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