please answer me fast guys
Answers
5 bulbs of 40W each used for 5hr : 5*40w*5/1000
therefore 5*40*5/1000= 1000/1000=1kwh
electric press for 4 hr and 500w : 4*500*1/1000=2kwh
total energy for 30 days : 1*30 =30 units for bulbs
total energy for electric press for 30 days :2*30=60 units
total energy = 30+60=90units
Answer:
90 kwh
Explanation:
Given,
- 5 tube lights of 40 watts are used for 5 hours per day
- An electric press is used of 500 watts is used for 4 hours per day
Energy consumed by the bulbs in one day-
=> (5×40×5)/1000( divided by 1000 to convert the energy consumed in kwh)
=> (25×40)/1000
=> 1000/1000
=> 1 kwh
Energy consumed by the electric press in one day-
=> 1×500×4/1000 (divided by 1000 to convert the energy consumed in kwh)
=> 2000/1000
=> 2 kwh
Total energy consumed in one day-
=> energy consumed by the bulbs in one day+ energy consumed by the press in one day
=>1+2
=> 3kwh
Total energy consumed by the press and the bulbs in a month of 30 days-
=> Total energy consumed in one day×30
=> 3×30
=> 90 kwh