Q13 of 52 Page 117

For the families having no electricity in their house, a Panchayat samity of village Bakultala accepted a plan to offer electric connections. 1200 families in this village have no electric connection in their house. In comparision to its previous year, it is possible to arrange electricity every for 75% of the families having no electricity, let us write by calculating, the number of families without electricity after 2 years.

We know that after reduction, the population after n years


Where p = present population, r% = rate of decrease one year and n = number of years.


Given p = 1200 families r% = 75% and n = 2 years


⇒ Number of families without electricity after 2 years




= 75


∴ The number of families without electricity after 2 years is 75.


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