A And B Can Together Finish A Work In 30 Days. They Worked Together F

1.	A And B Can Together Finish A Work In 30 Days. They Worked Together For 20 Days And Then B Left. After Another 20 Days, A Finished The Remaining Work. In How Many Days A Alone Can Finish The Job ?
Answer» (A + B)'s 1 DAY's work = 1/30 so (A&AMP;B) 20 days work = (201/30) = 2/3 so LEFT work = (1?2/3)=1/3 1/3 work is done by A = 20 days. So whole work will be done by A = (20 x 3) = 60 days. (A + B)'s 1 day's work = 1/30 so (A&B) 20 days work = (201/30) = 2/3 so left work = (1?2/3)=1/3 1/3 work is done by A = 20 days. So whole work will be done by A = (20 x 3) = 60 days.

A And B Can Together Finish A Work In 30 Days. They Worked Together For 20 Days And Then B Left. After Another 20 Days, A Finished The Remaining Work. In How Many Days A Alone Can Finish The Job ?

Answer»

(A + B)'s 1 DAY's work = 1/30

so (A&AMP;B) 20 days work = (20*1/30) = 2/3

so LEFT work = (1?2/3)=1/3

1/3 work is done by A = 20 days.

So whole work will be done by A = (20 x 3) = 60 days.

(A + B)'s 1 day's work = 1/30

so (A&B) 20 days work = (20*1/30) = 2/3

so left work = (1?2/3)=1/3

1/3 work is done by A = 20 days.

So whole work will be done by A = (20 x 3) = 60 days.