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As a result of Sarba Siksha Abhiyan the ...

As a result of Sarba Siksha Abhiyan the students leaving the school before completion, are re-admitted, so the students in a year is increased by 5% in comparison to its previous year. If the number of such re-admitted students in a district be 3528 in the present year. Find the number of students re -admitted 2 years before in this manner.

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Let the number of re-admitted students be x.
`:.` At the present year the number of students re-adimitted `=x xx(1+5/100)^(2)=x xx(1+1/20)^(2)`
`=x xx(21/20)^(2)=(441x)/400`
As per question `(441x)/400=3528`
or `x=(3528xx400)/441`
or `x=3200`
Hence the required number of sudents re-admitted before 2 years `=3200`
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