The scores of Amal and Bimal in an examination are in the ratio 11 : 14. After an appeal, their scores increase by the same amount and their new scores are in the ratio 47 : 56. The ratio of Bimal’s new score to that of his original score is
Explanation:
Suppose the original scores of Amal and Bimal are 11x and 14x respectively.
Suppose ‘y’ is the increase in their marks.
Therefore the new marks of Amal and Bimal are ‘11x + y’ and ‘14x + y’ respectively.
Therefore, we have 11x+y14x+y=4756
∴ 616x + 56y = 658x + 47y
Solving for x and y, we get 14x = 3y
Therefore Bimal’s old marks = 14x = 3y and his new marks = 14x + y = 4y. Therefore the required ratio = 4:3.
Hence, option (a).
» Your doubt will be displayed only after approval.
Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.