Question

In a house 5 bulbs, rated as 220V-100W are used 8 hours daily.Find the expenditure for 30 days at the rate of ₹2 per unit.​

Answer 1

Answer:

The expenditure for 30 days will be Rs. 240

EXPLANATION:

Wattage reading for 5 bulbs= 5x100= 500W

Reading for 8 hours a day= 500x8=4000

Reading for 30 days= 4000x30= 120000

no. of units used= 120000/1000= 120Units

Therefore total cost = 120x2= Rs. 240/-