Question

shally bought 100hens for rupee 80each and sold 20 of them at a gain of 5%.at what gain % must she sell the remaining hens so as to gain 20% on the whole transition​

Answer 1

100*80=8000 =c.p

20% on 8000 makes to 1600 that is she must sold dem at 9600

She already sold 20 at 5 % gain

80*20=1600 is c.p 1600*5%=80

80+1600=1680 is your s.p for 20

Now u need to make it to

9600-1680= 7920

The original cp was for 80 chickens

80*80=6400 but to make 20% gain on while she needs to make 9600 from which alredy 20 chicks are sold at 5%

Now original cp for 60 Chickens

6400 but to make gain 7920 is to be made

Therefore,7920-6400=1520

Now calculate what % is 1520 on cp of 6400

1520/6400*100 =23.75% on remaining

Hope that's the answer you were searching for !!