Answer:
(a) Energy consumed by 3 bulbs in one day units
(b) Energy consumed by 2 tube lights in one day units
(c) Energy consumed by TV of 100 W for 8 h
units
(d) Energy consumed by refrigerator in one day units
Total number of units consumed in 30 days
= 30 x (0.6 + 0.64 + 0. 8 + 7.2)
=30 x 9. 24
= 277. 2 units
Cost of one unit = `
3
Cost of 277.2 units = 3 x 277.
2 = ` 831.6.
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