Calculate the cost of using a 500W washing machine for 3 hours if the electricity rate is K2.15 per kWh.

Step 1: Convert the power from watts to kilowatts. P = 500 W = 500/1000 kW = 0.5 kW Step 2: Calculate the energy consumed in kilowatt-hours (KWh). E = P × t; E = 0.5 kW × 3 hours; E = 1.5 KWh Step 3: Calculate the total cost. Cost = E × Rate; Cost = 1.5 KWh × K2.15/KWh; Cost = K3.225 The cost of using the washing machine is K3.225. K3.225

Calculate the cost of using a 500W washing machine for 3 hours if the electricity rate is K2.15 per kWh.

Step 1: Convert the power from watts to kilowatts. P = 500 W = 500/1000 kW = 0.5 kW Step 2: Calculate the energy consumed in kilowatt-hours (KWh). E = P × t; E = 0.5 kW × 3 hours; E = 1.5 KWh Step 3: Calculate the total cost. Cost = E × Rate; Cost = 1.5 KWh × K2.15/KWh; Cost = K3.225 The cost of using the washing machine is K3.225. K3.225

Solved: Calculate the cost of using a 500W washing machine…

Convert the power from watts to kilowatts.
$P = 500 \text{ W} = \frac{500}{1000} \text{ kW} = 0.5 \text{ kW}$
Calculate the energy consumed in kilowatt-hours (KWh).
$E = P \times t$ $E = 0.5 \text{ kW} \times 3 \text{ hours}$ $E = 1.5 \text{ KWh}$
Calculate the total cost.
$\text{Cost} = E \times \text{Rate}$ $\text{Cost} = 1.5 \text{ KWh} \times \text{K}2.15/\text{KWh}$ $\text{Cost} = \text{K}3.225$
The cost of using the washing machine is K3.225.
$\text{K}3.225$

Calculate the cost of using a 500W washing machine for 3 hours if the electricity rate is K2.15 per kWh.

Answer

Step-by-step solution

Convert the power from watts to kilowatts.

Calculate the energy consumed in kilowatt-hours (KWh).

Calculate the total cost.

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