Question

Calculate the electricity bill amount for a month of april, if 4 bulbs of 40 w for 5 hours, 4 tube lights

Answer 1

40×6=240
240+8= 1920

Answer 2

Answer:

$\bf\underline{\underline{solution}}$

energy consume by bulb = power × time

= 40w watts × 5 hour

= 200watts

= 200 watts × 4 bulb

= 800 watts

= 0.8 unit

energy consume by tube light = power × time

= 60w × 5 hours

= 300watts

= 300 watts × 4 tube lights

= 1200 watts

= 1.2 unit

energy consume by T.V. = power × time

= 100w × 6 hours

= 600 watts

= 0.6 unit

energy consume by washing machine = power × time

= 400watts × 3 hour

= 1200 watts

= 1.2 units

sum of all units = 0.8+1.2+0.6+1.2 = 3.8 unit for a day

for 30 days = 30× 3.8

= 114 units

now , each unit costs ₹4 per unit = ₹4× 114unit

= ₹ 456

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all done :P