Physics, asked by lucy21, 1 year ago

A house has five rooms with 60 w bulbs everyday the bulbs are switched on from 7:00 pm to 10:30 pm.find the cost per week for lighting these rooms at ₹6.70 per unit

Answers

Answered by rahul967
2
The cost per week will be Rs 49.25
lucy21: Right
Answered by Suranjan11
0
Hope this helps you.
Attachments:
lucy21: I think it is wrong
rahul967: First convert into kilo watt by dividing by 1000. In the last calculations you have skipped 7. Two errors found.
lucy21: Yes
Suranjan11: sorry, I have done a great mistake. Thanks for the comment.
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