Find the gain or loss per cent, when:(i) C.P. = Rs 4000 and gain = Rs

1.	Find the gain or loss per cent, when:(i) C.P. = Rs 4000 and gain = Rs 40.(ii) S.P. = Rs 1272 and loss = Rs 328(iii) S.P. = Rs 1820 and gain = Rs 420.
Answer» (i) Given CP = Rs. 4000, gain = Rs. 40 Gain % = {(Gain/CP) x 100) % = {(40/4000) x 100} % = (0.01 x 100) % Gain % = 1% (ii) Given SP = Rs. 1272, loss = Rs. 328 Loss = CP – SP Hence, CP = Loss+ SP = Rs. 328 + Rs. 1272 = Rs. 1600 Loss % = {(Loss/CP) x 100} % = {(328/1600) x 100% Loss % = 20.5% (iii) Given SP = Rs. 1820, gain = Rs. 420 Gain = SP – CP CP = 1820 – 420 = Rs. 1400 Gain % = {(Gain/CP) x 100} % = {(420/1400) x 100 % Gain % = 30%

Find the gain or loss per cent, when:(i) C.P. = Rs 4000 and gain = Rs 40.(ii) S.P. = Rs 1272 and loss = Rs 328(iii) S.P. = Rs 1820 and gain = Rs 420.

Answer»

(i) Given CP = Rs. 4000, gain = Rs. 40

Gain % = {(Gain/CP) x 100) %

= {(40/4000) x 100} %

= (0.01 x 100) %

Gain % = 1%

(ii) Given SP = Rs. 1272, loss = Rs. 328

Loss = CP – SP

Hence, CP = Loss+ SP

= Rs. 328 + Rs. 1272

= Rs. 1600

Loss % = {(Loss/CP) x 100} %

= {(328/1600) x 100%

Loss % = 20.5%

(iii) Given SP = Rs. 1820, gain = Rs. 420

Gain = SP – CP

CP = 1820 – 420

= Rs. 1400

Gain % = {(Gain/CP) x 100} %

= {(420/1400) x 100 %

Gain % = 30%