Answer:
The cost will be equal after 5 hours.
Explanation:
Given:
A phone company offers two monthly plans.
Plan A costs =$10 plus an additional $0.19 for each minute of calls.
Plan B costs= $22 plus an additional $0.15 for each minute of calls.
solution:
Now, let n represents the number minutes of call.
For plan A
total cost = $10 additional + $0.19 for each minute
total cost = 10 + 0.19 x n
For plan B
total cost = $22 + $0.15 for each minute
total cost = 22 + 0.15 x n
Then, we have to equate both the costs, to get the required answer
10 + 0.19n = 22 + 0.15n
0.19n – 0.15n = 22 – 10
0.04n = 12
[tex]n = \frac{ 12}{0.04}[/tex]
n = 300
So, the cost will be equal after 300 minutes
5 x 60 minutes
5 x 1 hour
5 hours
Hence, the cost will be equal after 5 hours.
