A house is fitted with seven tubelights of rating `220 V, 40 W` each , two bulbs of rating `220 V, 60 W`each, five fans each drawing a current of `0.4 A at 220 V`, and a heater of resistance `48.4 Omega`. The main line power supplied to the house is at `220 V`. Calculate the bill for the month of january if tubelights and bulbs are used for `6 h` daily, fans for `1 h` daily , and heater for `10 h` daily. The electricity is to cost `Rs. 2 per` unit.

Explanation

To solve the problem step by step, we will calculate the total power consumed by each appliance, the total energy consumed in a month, and finally the cost of that energy.

### Step 1: Calculate the total power consumed by the tubelights.
- Each tubelight has a power rating of 40 W.
- There are 7 tubelights.
- Total power for tubelights = Number of tubelights × Power of each tubelight
\[
\text{Total Power (Tubelights)} = 7 \times 40 = 280 \, \text{W}
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