ed/landline tariffs line call tariffs are fairly complicated, since they factor in the distance, time of to whom the call is placed, and whether the receiver has a landline or cellphone. following is an example of Telkom landline tariffs: sts of a directly dialled call from a Telkom to a Telkom landline are determined by e destination and the time of the call, as outlined below: The destination: Different tariffs exist for local, long distance or international call cal calls: The minimum charge is 65 cents, which covers the first 90 s, after whic all is charged at 0,72 c per second. During CallMore time, the minimum charge 65 c covers the first 189 s after which the call is charged at 0,34 c per second. ng-distance calls: The minimum charge is 65 c for the first minute, after which call is charged at 1,08 cents per second. During CallMore the minimum charge 65 cents covers the first 2 minutes after which the call is charged at 0.54 c per Cond. The time of day: Standard time: Mondays to Fridays: 07:00 to 19:00. CallMore time: Mondays to Fridays: 19:00 to 07:00, and Fridays 19:00 to ondays 07:00 rates are VAT exclusive. Osts from Telkom landlines to cellphones are not based on distance. Calls to llphones are charged in increments of one minute for the first minute and in crements of 30 s or part thereof thereafter. andard time: Mondays to Fridays from 07:00 to 20:00: Calls to cellphones are charged at: R1,29 (R1,48 VAT included) More time: Mondays to Fridays from 20:00 to 07:00 and Fridays from 20:00 Ondays 07:00 Calls to cellphones are charged at: R1,03 (R1,17 VAT included) EXERCISE 19 Use the Telkom tariffs on page 41 to answer the following questions: 1 2 3 4 5 6 7 What does a long-distance landline-to-landline call from 20:00 to 20:20 cos a Sunday evening? Set up equations to calculate the cost of a local call from a landline to a lar during CallMore time. Draw a graph to represent the different tariff structures for landline-to-cell calls made during standard time and CallMore time. How much money will it cost to make a local landline-to-landline call las 3 min 42 s during CallMore time? John makes a long-distance call to his mother every Sunday evening from landline to her landline. His calls usually last for about 10 minutes. Whe is out of town, his mother calls him on his cellphone on Sunday evening Calculate the cost of the respective calls. How much more does John's m have to pay for the 10-minute call (excluding VAT), she makes to her sor he is out of town? Pamela has an Allo-Allo prepaid per-minute price plan. What would she a 5 min 23 s call to an M-Tel cellphone : 6.1 made in peak time with standard billing 6.2 made in off-peak time with standard billing? Consider the peak rates on an Allo-Allo prepaid standard price plan an prepaid per-second billing plan for only Allo -to-Allo calls. 7.1 Draw a graph to show the difference between the two. Use a scal 1-7 min. it would cost to make:
