Question
Mathematics Question on Commercial Maths
In a house, there are six 40-watt lamps which are on for 5 hours a day and three 80-watt fans which are on for 10 hours a day. If electricity costs Rs. 2 per kilowatt hour, what is the monthly electricity bill?
A
Rs. 216
B
Rs. 280
C
Rs. 315
D
Rs. 400
Answer
Rs. 216
Explanation
Solution
The correct option is (A): Rs. 216