Of the calls a directory assistance operator received, 188 were requests for telephone numbers listed in the c?
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25 Of the calls a directory assistance operator received, 188 were requests for telephone numbers listed in the current directory. This accounted for 94% of the calls for assistance that the operator received. (a) How many calls did the operator receive? (b) How many telephone numbers requested were not listed in the current directory?
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Answer:
(a) If x is the total number of calls: 188/x = 0.94 ie x = 200 (b) 200-188=12
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