A can do a piece of work in 40 days and B in 45 days. They work together for 10 days and then B goes away. In how many days wil A finish the remaining work?
A's 1 day work =140
B's 1 day work =145
A and B's 1 day work =140+145
=9+8360=17360
A and B's 10 days work =17360×10=1736
Remaining work =1−1736=36−1736=1936th
Now A can do 1 work in =40 days
He will do 1936 work in =40×1936
=10×199=1909
=2119days