Let CP of motorcycle =₹100 ∴ Cost paid by Mr x =(100−10% of 100)+85% of (100−10% of 100) =(100−10)+{85% of (100−10)} =90+7.65=97.65 Now, cost paid by Mr y =(100+8.5% of 100) −{10% of (100+8.5% of 100)} =1085−(10% of 108.5)=108.5−10.85=97.65 So, both Mr x and Mr y paid the same amount.