Question

A washing rated 300w is operated for 1 hour per day if the cost of unit is rs3 find the cost of the energy to operate a washing machine for the month of march

Answer 1

Step-by-step explanation:

P 300w

t 1h× 31 = 31h

E = p×t

300×31 wh

9300wh = 9300÷ 1000 kwh

9.3kwh

1kwh = 1u

1kwh = 3rs

9.3kwh = 3× 9.3

27.9 rs