Question

If you have a prepaid electricity voucher for R15 how long could you watch​

Answer 1

To find out how long you could watch TV with a prepaid electricity voucher for R15, calculate the total kWh you can buy with R15, then divide it by the kWh your TV consumes per hour. You will need the cost per kWh of electricity and the power rating of your TV.

Step-by-step explanation:

To determine how long you could watch TV with a prepaid electricity voucher for R15, you need to know the cost per unit of electricity, the power rating of the TV, and how many units of electricity R15 can buy. Here's an example calculation:

1. Find out the cost per kWh (kilowatt-hour) of electricity from your local service provider.
2. Determine the power rating of your TV, which is usually given in watts (W). This can be found on the device label or in the user manual.
3. Calculate the kWh your TV uses by dividing the power rating by 1000. For instance, a 100W TV consumes 0.1 kWh per hour.
4. Divide R15 by the cost per kWh to get the total kWh you can consume.
5. Finally, divide the total kWh you can purchase with R15 by the kWh your TV uses per hour to get the total number of hours you can watch TV.

This is how you can use mathematical calculations to estimate your electricity usage based on a prepaid voucher.