Question

An electric heater is rated at 2 KW .calculate the cost of using it for 2 hours daily for the month of september ,if each unit costs rupees 4?

Answer 1

Answer:

1unit = 1kwh

September month total hours=30×2=60

total heater rated unit= 2×60=120 kWh

4 rupees of 1kwh

total rupees for sep month=4×120=480

Answer 2

Answer:

2×2 ×4× 30

480ruppes

Explanation: