In dictation test of 27 words. Sheila spelled 18 words correctly. Find the ratio of: a. Total words to wrongly spelled words. b. Correctly spelled words to wrongly spelled words. c. The teacher decided to give 3 more words in the dictation and Sheila spelled all of them correctly, what is the new ratio of correctly spelled words to total spelled words?
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Answer:
a) 27:9 = 3:1
b) 9:18 = 1:2
c) 21:30
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