A) $ Gainof8\frac{1}{3}% $
B) $ Lossof8\frac{1}{3}% $
C) $ Gainof7\frac{2}{3}% $
D) $ Lossof7\frac{1}{7}% $
Correct Answer: D
$ \therefore $ Cost price of 10 cycles $ =500\times 10=Rs.5000 $ But Ramesh spent Rs. 2000 on the repair
$ \therefore $ Entire cost price $ =5000+2000=Rs\text{. 7000} $ Now, (for 5 cycles) selling price of 1 cycle = Rs. 750
$ \therefore $ Selling price of 5 cycles $ =750\times 5=Rs\text{. 3750} $ and (for remaining 5 cycles) Selling price of 1 cycle = Rs. 550
$ \therefore $ Selling price of five cycles $ =550\times 5=Rs\text{. 2750} $ So, entire selling price $ =3750+2750=Rs\text{. 6500} $ Loss = Cost price $ - $ Selling price $ =7000-6500=500 $ $ \text{Loss }%\text{ =}\frac{500}{7000}\times 100=\frac{50}{7}=7\frac{1}{7}% $