Before last year, when the number of students of a school was increased by 25%, it became 500. Last year, again the number was increased by 20%. How many new students were enrolled in two years?
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Given:
Before last year, when the number of students of a school was increased by 25%, it became 500.
Last year, it again increased by 20%.
Solution:
Let the original number of students before last year be x
Therefore, ATQ.
(25% of x) + x = 500
=⟩ x/4 + x = 500
=⟩ 5x/4 = 500
=⟩ 5x = 500 × 4
= 2000
=⟩ x = 2000 ÷ 5
= 400
Hence, original number of student before inrement was 400.
Now,
Last year, the number was again increased by 20%.
So, (20% of 500) + 500
i.e., 600.
Therefore, overall increment in two years
= 600 - 400
= 200 (Ans)
Hope you liked my answer, cheers :)
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