A telephone company makes up its monthly bills as follows: a fixed charge of 800 naira plus a charge proportional to the number of units of call on the telephone .If it charge 2 naira per unit of call , calculate the total charges on (a) 80 units (b) 150 units (c) 782 units
cost = 800 + 2u , where u the number of units of call
a) so if u = 80
cost = 800 + 2(80) = 800 + 160 = 960
b) if u = 150
......
c) if u = 782
...
THANKS
It was straight forward and kinda easy and I lover it and everything. I would have just needed more explanation because I don't know what you did. Anyways Thank u very much.
(a)=960(b)=1100(c)=1564
To calculate the total charges, we need to add the fixed charge of 800 naira to the charge proportional to the number of units of call.
(a) To calculate the total charges for 80 units:
- Multiply the charge per unit (2 naira) by the number of units (80): 2 naira x 80 units = 160 naira
- Add the fixed charge to the calculated charge: 160 naira + 800 naira = 960 naira
Therefore, the total charges for 80 units of call would be 960 naira.
(b) To calculate the total charges for 150 units:
- Multiply the charge per unit (2 naira) by the number of units (150): 2 naira x 150 units = 300 naira
- Add the fixed charge to the calculated charge: 300 naira + 800 naira = 1100 naira
Therefore, the total charges for 150 units of call would be 1100 naira.
(c) To calculate the total charges for 782 units:
- Multiply the charge per unit (2 naira) by the number of units (782): 2 naira x 782 units = 1564 naira
- Add the fixed charge to the calculated charge: 1564 naira + 800 naira = 2364 naira
Therefore, the total charges for 782 units of call would be 2364 naira.