Question

A certain city's power company charges their residents for electricity usage on a daily basis. There is a basic charge of 11.6 cents. For each day the first 10 kWh cost 4.59 cents per kWh and any additional kWhs are 9.71 per kWh. (A kWh, or kilowatt-hour, is a unit of energy.)

Complete the following table using the information provided above.

KWh 0 5 10 15 20
cost(dolllar)

KWh 25 30 35 40
cost(dolllar)

Answer 1

Answer:

Table of charges:

KWh                                                        0       5           10          15           20    

Basic charge (cents)                          11.60    11.60     11.60      11.60       11.60

Charge for first 10 kWh (4.59cents)    0     22.95   45.90    45.90     45.90

Additional usage above 10 kWh          0       0           0         48.55      97.10

(9.71 cents)

Total (cents)                                     11.60   34.55   57.50   106.05    154.60

cost (dollar)                                       0.12     0.35      0.58   1.06         1.55

KWh                                                           25           30          35           40

Basic charge (cents)                               11.60        11.60        11.60        11.60

Charge for first 10 kWh (4.59cents)    45.90      45.90       45.90      45.90

Additional usage above 10 kWh         145.65    194.20    242.75     291.30

(9.71 cents)

Total (cents)                                        203.15    251.70     300.25    348.80                                  

cost (dollar)                                         2.03        2.52          3.00       3.49

Step-by-step explanation:

a) Data:

Basic charge = 11.6 cents (0.116)

Charge for the first 10 kWh = 4.59 cents (0.0459)

Charge for additional usage above 10 kWh = 9.71 cents (0.0971)

b) Each kWh consumed or not attracts the basic charge of 11.6 cents.  The first 10 kWh consumed is billed at 4.59 cents, while the additional kWh consumed is charged at 9.71 cents.  The charge per consumption is first totaled in cents before being converted to dollars by dividing by 100.