প্রশ্ন সংশোধন করুন
প্রশ্ন:
A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in :
A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in :