Question

5 tube lights of 40 w each are used for 3 hours everyday and 2 fans of 100 w each are used for 4 hours everyday for domestic purposes. Calculate the units of energy consumed for the month of may. Also find the expenditure if the cost of one unit is
Rs 2/-

Answer 1

here are 5 tubelights of 40 w and used for 3 hours

5× 40 × 3 = 600

and for fans

2× 100×4 = 800

total watts = 600+ 800 = 1400w

total cost = 2 × 1400 = 2800 rupee

I hope it will help u a lot and Don't forget to say thanks

Answer 2

Answer:

(5*40)*3/1000+(2*100)*4/1000=(600+800)/1000=1.4kwh per day

month of May=1.4*31=43.4kwh

cost=43.4*2=86.8