Question

calculate the electricity bill for a month of april , if 4 bulbs of 40 w for 5 hrs. , 4 tubelights of 60w for 5 hrs. , a t.v. of 100w for 6 hrs. , a washing machine for 400w for 3 hrs are used per day. the cost per unit is Rs1.8.

Answer 1

Answer:

No. of bulbs = 4 = 4 x 40W = 160 W

No. of tubelights = 4 = 4 x 60W = 240W

No. of TV = 1 = 100W

No. of washing machine = 1 = 400 W

160w + 240w + 100w + 400w

cost of per unit = Rs 1.8