Monthly electricity use (units) of 50 homes is shown in a histogram with classes 0-100, 100-200, 200-300, 300-400 and frequencies 8, 17, 15, 10. The board charges Rs 6 per unit. Using class marks as the typical usage per home, estimate the total monthly bill (in Rs) for all 50 homes.

Question

Accepted Answer

61200. Class marks 50,150,250,350. Total units = 8x50 + 17x150 + 15x250 + 10x350 = 400 + 2550 + 3750 + 3500 = 10200. Bill = 10200 x 6 = Rs 61200.

Monthly electricity use (units) of 50 homes is shown in a histogram with classes 0-100, 100-200, 200-300, 300-400 and frequencies 8, 17, 15, 10.
The board charges Rs 6 per unit. Using class marks as the typical usage per home, estimate the total monthly bill (in Rs) for all 50 homes.

Step-by-Step Solution

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More Class 8 Bar Graphs and Histograms practice

Monthly electricity use (units) of 50 homes is shown in a histogram with classes 0-100, 100-200, 200-300, 300-400 and frequencies 8, 17, 15, 10.The board charges Rs 6 per unit. Using class marks as the typical usage per home, estimate the total monthly bill (in Rs) for all 50 homes.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 8 Bar Graphs and Histograms practice

Monthly electricity use (units) of 50 homes is shown in a histogram with classes 0-100, 100-200, 200-300, 300-400 and frequencies 8, 17, 15, 10.
The board charges Rs 6 per unit. Using class marks as the typical usage per home, estimate the total monthly bill (in Rs) for all 50 homes.