Answers

2016-03-10T18:02:31+05:30
2016-03-10T18:18:32+05:30
P=W/T
1KW=1000W
100W=0.1KW
110W=1.1KW

Bulbs---0.1KW×12Hours ×4
=4.8units

FANS---1.1KW×12Hours×5
=6.6units

Total units =11.4units
Expenditure=11.4× Rs2.50
=Rs28.50
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