Che A cell phone company offers two different plans Plan A c

Che A cell phone company offers two different plans Plan A costs $83 per month for unlimited talk and text·Plan B costs $0.20 per minute lus $0.10 per text message sent. You need to purchase a plan for your 14-year-old sister. Your sister currently uses 1,750 minutes and ends 1,600 texts each month. 1) What is your sister\'s total cost under each of the two plans? 2) Suppose your sister doubles her monthly usage to 3,500 minutes and sends 3,200 texts. What is your sister\'s total cost under each of the two plans? Plans Total Cost (1) Plan A Plan B (2) Plan A Plan B

Solution

1)

Sister\'s total cost :

Plan A = $83 (being fixed & unlimited)

Plan B = 1750 * 0.20 + 1600 * 0.10 = $510

2)

Sister\'s total cost :

Plan A = $83 (being fixed & unlimited)

Plan B = 3500 * 0.20 + 3200 * 0.10 = $1020