Question

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.This Q is of 30 points. Hurry. answer only if you are 100%sure. No SPAMS.. spam answers will be reported and deleted. PLEASE HELPPPP !!

Answer 1

1 hen cost 80 rs
then se sold 20 at gain of 5 %
1 -------cost 84 rs
20 ----- cost 84 . 20 = 1680rs
then se sold 80 hens for 20% gain
1 --- cost after adding gain 96
80 hens cost = 96 . 80 = 7680 rs
total sp = 7680 +1680 = 9360 rs
gain = 1369
gain % = 1360/8000×100=17%