They have disturbed the beauty of Maths in this question �� which lies in the very fact that whatever way you calculate the figures, they all add up ultimately as a whole without any discrepancy. I guess i'm done protesting here. ��. If in the exam hall i would also calculate it out of 24000, since the examiner is also likely to go with the popular opinion and i would prefer marks over keeping the beauty of maths intact.��