Math, asked by nandinitapase25, 2 months ago

3.
Calculate the monthly bill if the following appliances are used as indicated below at the
rate of Rs. 5 per unit.
a) a heater of 1000 W for 2 hours daily.
b) Ten 60 watt bulbs for 5 hours daily,​

Answers

Answered by amitnrw
1

Given : a) a heater of 1000 W for 2 hours daily.

b) Ten 60 watt bulbs for 5 hours daily,​

To Find : monthly bill  at the rate of Rs. 5 per unit.

Solution:

a heater of 1000 W for 2 hours daily.

=> Daily consumption = 1000 * 2 = 2000 Wh

= 2 kWh

= 2 units

Consumption in month = 30 * 2 = 60 units

Rate = Rs 5 per unit

=> Monthly bill = 60 * 5 = Rs 300

Ten 60 watt bulbs for 5 hours daily,​

= 10 * 60 * 5  =  3000 Wh

= 3 kWh

= 3 units

Consumption in month = 30 * 3 = 90 units

Rate = Rs 5 per unit

=> Monthly bill = 90 * 5 = Rs 450

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