Question

Exercise 3

Directions: Solve the following problems.
1. All of the computers in the ICT room are in use for 5 hours every day on
together use 8.3 kW. How much energy is used in a day?
2. How much does it cost to operate a 400 W television for 8 hours if electric
anycosts 6.88 pesos per kWh (includes both generation and distribut​

Answer 1

1. Since all computers use 8.3kW for 5 hours daily,
The energy consumes in a day is given as
8.3kW * 5hours
= 41.5kWh

2. 400W television in 8 hours uses
400W * 8hours energy which is equivalent to 3200Wh
Converting to kWh gives 3200/1000 = 3.2kWh
The cost of running the television in pesos is calculated as
6.88 pesos = 1kWh
x pesos = 3.2kWh

Therefore x pesos = 6.88 * 3.2
= 22.016 pesos.
It costs 22.02 pesos to run the TV for 8hours