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?