A grocer bought 25 dozen of eggs for Rs 525 .Out of these ,18 eggs were found to be rotten .He sold remaining eggs at the rate of Rs 26 per dozen .Find his gain or loss per cent

Answer 1

25doz * 12 = 300 eggs bought.
$525/300 = $1.75/egg
Loss = 1.75/egg * 18 = $31.50
Cost = $26/doz * 25 = $650
%Loss = 31.50/650 * 100% = 4.8

Answer 2

Income: (25*12-18) * 26/12 = 611
Profit: 611-525 = 86
% profit: 86/525 = 16.38%