A,B and C can do piece of work in 11 days,20 days and 55 days respectively,
working alone. How soon can the work be done if a is assisted by B and C on
alternate days/
a) 6
b) 7
c) 8
d) 9
e) 10
working alone. How soon can the work be done if a is assisted by B and C on
alternate days/
a) 6
b) 7
c) 8
d) 9
e) 10