ABC Teleking offer an installation of the landline that
charges R160 for the first 100 minutes therefore.
a) Determine the total cost of 120 minutes talk time
To determine the total cost of 120 minutes talk time, we need to calculate the cost for the first 100 minutes and then add it to the cost for the remaining 20 minutes.
The cost for the first 100 minutes is R160.
The cost for the remaining 20 minutes is (20 minutes x R1/minute) = R20.
Therefore, the total cost for 120 minutes talk time is R160 + R20 = R180.