1. A man bought a book for Rs.450 and sold for Rs.495.Find the gain percent.

A. 620

B. 680

C. 720

D. 750

S.P. = 495 C.P. = 450 Gain = 495 - 450 = 45 Gain % = $\frac{45}{450}$ $\times $ 100 = 10 $\therefore$ gain% = 10

2. A man bought a cycle for Rs.450 and sold for Rs.405. find the loss percent.

A. 620

B. 680

C. 720

D. 750

Loss = 450 - 405 = 45 Loss% = $\frac{45}{450}$ $\times $ 100 = 10 $\therefore$ loss% = 10

3. A man bought an object for Rs.750 and sold for 10% gain. Find S.P.

A. 620

B. 680

C. 720

D. 750

C.P. = 750 gain = 10% S.P. = 750 $\times $ $\frac{100 + 10}{100}$ 750 $\times $ $\frac{110}{100}$ = 825 $\therefore$ S.P. = 825

4. A radio is bought for Rs.750 and sold for 4% loss. Find S.P.

A. 620

B. 680

C. 720

D. 750

C.P. = 750 loss = 4% S.P. = 750 $\times $ $\frac{100 - 4}{100}$ 750 $\times $ $\frac{96}{100}$ = 360

5. A chair is sold for Rs.825. gain is 10%. find C.P.

A. 620

B. 680

C. 720

D. 750

S.P. = 825 gain = 10% C.P. = 825 $\times $ $\frac{100}{100 + 10}$ 825 $\times $ $\frac{100}{110}$ = 750 C.P. = 750