Grade 12th pass10 grade maths
A can do a piece of work in 14 days and B in 21 days. They begin together, but 3 days before the completion of the work, A leaves off. In how many days is the work complete?
(a) 10 days
(b) 1015 days
(c) 15 days
(d) 7 days
A can do a piece of work in 14 days and B in 21 days. They begin together, but 3 days before the completion of the work, A leaves off. In how many days is the work complete?
(a) 10 days
(b) 1015 days
(c) 15 days
(d) 7 days
