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A phone company offers two monthly plans.
Plan A costs $15 plus an additional $0.15 for each minute of calls.
Plan B costs $26 plus an additional $0.13 for each minute of calls.
For what amount of calling do the two plans cost the same?
What is the cost when the two plans cost the same?
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15 + 0.15t = 26 + 0.13t (where t is the amount of calling time)
From this equation
t = = 550 minutes.
The common costs is 15 + 550*0.15 = 97.50 dollars.
Solved.