Question

please solve the question

Answer 1

HELLO FRIEND HERE IS YOUR ANSWER,,,,,,,



Refer and consult the following attachments for a detailed explanation and step by step solution for getting a correct and final solution that is ,,,,



$\boxed{\textbf{OPTION \: B) \: 60}}$%



HOPE IT HELPS YOU AND SOLVES ALL YOUR DOUBTS FOR OBTAINING GAIN PERCENTAGES BY SOME CONDITIONS!!!!