Question

Here are the monthly charges for jo’s Mobile phone. Monthly charge £16,150 free minutes,then 13p per minute,150 free texts,then 15p per text during one month,jo makes 170 minutes of calls and sends 182 texts. Work out the total charge for the month.

Answer 1

Jo's Mobile Plan:

• Fixed monthly charge = £16
• Monthly 150 free minutes, post that 13p (or £0.13) per minute,
• Monthly 150 free texts, post that 15p (or £0.15) per text

Jo's mobile phone usage details:

• 170 minutes of calls
• 182 texts

Total Charges for Jo = Fixed Monthly Charge + Charges for Calls + Charges for Texts

⇒ Total Charges for Jo = 16 + (170-150) × 0.13 + (182-150) × 0.15

⇒ Total Charges for Jo = 16 + (20) × 0.13 + (32) × 0.15

⇒ Total Charges for Jo = 16 + 2.6 + 4.8

⇒ Total Charges for Jo = 23.4

Hence, Jo should be charged £23.4 for the month.