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Question 8 : In the final examination, Bishnu scored 52% and Asha scored 64%. The marks obtained by Bishnu is 23 less, and that by Asha is 34 more than the marks obtained by Ramesh. The marks obtained by Geeta, who scored 84%, is

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Explanatory Answer

Share of Student's marks
The difference between Asha and Bishnu marks = 23 + 34 = 57
The difference between Asha and Bishnu marks(in terms of percentage) = 64% - 52% = 12%
We need to find Geeta's marks who secured, 84%.
Observe that 84 = 7 × 12
Therefore, Geeta's marks = 7 × 57 = 399.