Question

15 bulbs of 60w each run for 6 hours daily and a fridge of 300w runs for 5 hours daily. find the forthrightly bill at the rate of 3 rupees per unit​

Answer 1

Answer:

Here

Explanation:

Solution :-

Number of bulbs = 15

Electricity consumption = 60 Watts

Hours run daily = 6 hours

Total consumption of electricity in a fortnight [in units] = (15*60*6*14)/1000

= 75.6 units

Number of fridge = 1

Electricity consumption = 300 Watts

Hours run daily = 5 hours

Total consumption of electricity in a fortnight [in units] = (1*300*5*14)/1000

= 21 units

Total consumption of electricity by 15 bulbs and 1 fridge in a fortnight

= 75.6 + 21 = 96.6 units

Rate = 30 paise per unit

Fortnightly bill amount = 0.30*96.6

= Rs.28.98 or Rs. 29 (Approximately)