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11 June, 20:13

Jane's mobile phone plan charges $0.05 per minute at daytime rates before 8 p. m. and $0.03 per minute at nighttime rates after 8 p. m. A conference call costs 1.5 times the normal rate. Calculate the cost of a conference call lasting from 7 p. m. to 8:30 p. m. Minutes at daytime rate: Minutes at nighttime rate: Total cost:

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  1. 11 June, 20:20
    0
    The conference call lasts 90 minutes. Minutes at daytime rate is 7pm to 8pm, 60 minutes, and at nighttime rate, 30 minutes.

    60 mins @ 5c/min=$3. 30 mins @ 3c/min=$0.90. Total before conference charge: $3.90. Total cost=3.90*1.5=$5.85.
  2. 11 June, 20:42
    0
    Minutes at daytime rate: 60

    Minutes at nighttime rate: 30

    Total cost: $5.84
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Home » Mathematics » Jane's mobile phone plan charges $0.05 per minute at daytime rates before 8 p. m. and $0.03 per minute at nighttime rates after 8 p. m. A conference call costs 1.5 times the normal rate. Calculate the cost of a conference call lasting from 7 p. m.
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