Toshiba Bought 100 Hens For Rs.8000 And Sold 20 Of These At A Gain Of

1.	Toshiba Bought 100 Hens For Rs.8000 And Sold 20 Of These At A Gain Of 5%. At What Gain Percent She Must Sell The Remaining Hens So As To Gain 20% On The Whole ?
Answer» C.P of 100 hens = RS. 8000 COST of one hen = 8000100 Rs. 80 C.P of 20 hens = Rs (8020) = Rs. 1600 GAIN = 5% S.P = 105100×1600 = Rs. 1680 C.P of 80hens = Rs.(8080) = Rs. 6400 Gain on 80 hens – C.P 80 hens Gain on 100 hens = gain on 80 hens + gain on 20 hens = 80+ S.P of 80 hens – 6400 S.P of 80 hens = Rs (1600+6400-80) S.P of 80 hens = Rs. 7920 Gain on 80 hens = S.P of 80 hens – C.P of 80 hens = Rs. (792-6400) = Rs. 1520 Gain % 80 hens = 15206400×100 = 23.75% Therefore, Toshiba gained 23.75% on 80 hens. C.P of 100 hens = RS. 8000 Cost of one hen = 8000100 Rs. 80 C.P of 20 hens = Rs (8020) = Rs. 1600 Gain = 5% S.P = 105100×1600 = Rs. 1680 C.P of 80hens = Rs.(8080) = Rs. 6400 Gain on 80 hens – C.P 80 hens Gain on 100 hens = gain on 80 hens + gain on 20 hens = 80+ S.P of 80 hens – 6400 S.P of 80 hens = Rs (1600+6400-80) S.P of 80 hens = Rs. 7920 Gain on 80 hens = S.P of 80 hens – C.P of 80 hens = Rs. (792-6400) = Rs. 1520 Gain % 80 hens = 15206400×100 = 23.75% Therefore, Toshiba gained 23.75% on 80 hens.

Toshiba Bought 100 Hens For Rs.8000 And Sold 20 Of These At A Gain Of 5%. At What Gain Percent She Must Sell The Remaining Hens So As To Gain 20% On The Whole ?

Answer»

C.P of 100 hens = RS. 8000

COST of one hen = 8000100

Rs. 80 C.P of 20 hens = Rs (80*20) = Rs. 1600

GAIN = 5%

S.P = 105100×1600

= Rs. 1680

C.P of 80hens = Rs.(80*80) = Rs. 6400

Gain on 80 hens – C.P 80 hens

Gain on 100 hens = gain on 80 hens + gain on 20 hens

= 80+ S.P of 80 hens – 6400

S.P of 80 hens = Rs (1600+6400-80)

S.P of 80 hens = Rs. 7920

Gain on 80 hens = S.P of 80 hens – C.P of 80 hens

= Rs. (792-6400) = Rs. 1520

Gain % 80 hens = 15206400×100

= 23.75%

Therefore, Toshiba gained 23.75% on 80 hens.