প্রশ্ন সংশোধন করুন
প্রশ্ন:
A is 30% more efficient than B . How much time will they, working together , take to-complete a job which A alone could have done in 23 days ?
A is 30% more efficient than B . How much time will they, working together , take to-complete a job which A alone could have done in 23 days ?