SOLUTION: A phone company offers two monthly plans. Plan A costs
$12
plus an additional
$0.19
for each minute of calls. Plan B costs
$24
plus an additional
$0.15
for each min
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-> SOLUTION: A phone company offers two monthly plans. Plan A costs
$12
plus an additional
$0.19
for each minute of calls. Plan B costs
$24
plus an additional
$0.15
for each min
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Question 976012: A phone company offers two monthly plans. Plan A costs
$12
plus an additional
$0.19
for each minute of calls. Plan B costs
$24
plus an additional
$0.15
for each minute of calls.
For what amount of calling do the two plans cost the same?
What is the coast when the two plans cost the same? Answer by Cromlix(4381) (Show Source):
You can put this solution on YOUR website! Hi there,
Set up formulae for two plans:
1st plan = 12 + n(0.19)
2nd plan = 24 + n(0.15)
make them equal one another:
12 + n(0.19) = 24 + n(0.15)
Collect like terms
n(0.19) - n(0.15) = 24 - 12
n(0.04) = 12
n = 12/0.04
n = 300.
Plans cost the same when 300 minutes have been used.
The cost when the two plans equal one another
= $69.
Hope this helps:-)
