A can build up a wall in 8 days while B can break it in 3 days. A has worked for 4 days and then B joined to work with A for another 2 days only. In how many days will A alone build up the remaining part of the wall?
a) 13/3 days
b) 22/3 days
c) 7/4 days
d) 7 days
e) None of these
a) 13/3 days
b) 22/3 days
c) 7/4 days
d) 7 days
e) None of these