Question

A shopkeeper used electric heater for 5 hours and and 120 watt bulb for 10 hour find the cost of the electrical heater and the electrical heater for 20 days if cost of 1 unit is 1 ruppess​

Answer 1

Answer:

please mark me as brilliant

follow me I will follow you back

Step-by-step explanation:

1 kwh = 1000 W

Bulb Rating =60 W = .06 kW

Bulb illuminates for = 10hrs/day

Bulb consumes units( kWH)/day= .06×10= .6kWH/ day = .6 units/ day

In 30 days = .6×30 = 18units

1 unit cost = 3.50/-

12 units cost = 3.50×18 = 63/-

Therfere Rs.63/- has to be paid in a month

.

.

.

.

I hope it will help you