In a dictation test of 20 words, Roshan spelled 18 words correctly. find the ratio of — (a) total words to wrongly spelled words. (b) correctly speled words to wrongly spelled
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total words=20
correctly spelled words=18
wrongly spelled words=20-18=2
a.20:2=20/2=10/1=10:1
b.18:2=18/2=9/1=9:1
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