Question

In a house hold 5 tubelights of 40 W each use for 5 hour, an electric press 500 W for 4 W, an touster 60 W each for 6 h. calculate the total units consumed by house in a month of 30 days. If 1 unit = 3.75 Rs. Calculate the bill of electricity.

Answer 1

Solution:

For tubelight:

Given:

Power = 5 × 40 = 200 W

Hour = 5 h

Day = 30 days

$\sf{1 \: unit = \dfrac{Power \times Hour \times Day}{1000}}$

$\sf{\implies \: \dfrac{200 \times 5 \times 30}{1000}}$

${\boxed{\boxed{\sf{\implies \: 30 \: units}}}}$

For Electric press:

Given:

Power = 500 W

Hour = 4 h

Day = 30 days

$\sf{1 \: unit = \dfrac{Power \times Hour \times Day}{1000}}$

$\sf{\implies \: \dfrac{500 \times 4 \times 30}{1000}}$

${\boxed{\boxed{\sf{\implies \: 60 \: units}}}}$

For Touster:

Given:

Power = 60 w

Hour = 6 h

Day = 30 days

$\sf{1 \: unit = \dfrac{Power \times Hour \times Day}{1000}}$

$\sf{\implies \: \dfrac{60 \times 6\times 30}{1000}}$

${\boxed{\boxed{\sf{\implies \: 10.8\: units}}}}$

Total units = 30 unit + 60 unit + 10.8 unit.

=> 100.8 units

If 1 unit = 3.75 Rs

So 100.8 unit = 3.75 × 100.8

=> 378 Rs