Commercial paper matures in .
The maturity period of a commercial paper usually ranges from
(a) 20 to 40 days
(b) 60 to 90 days
(c) 120 to 365 days
(d) 90 to 364 days
A can do a piece of work in 15 days. 13 is 50% more efficient than A. B can finish it in
(a) 10 days
(b) 712 days
(c) 12 days
(d) 1012days
A can do a piece work in 15 days and B in 20 days. If they work together for 4 days, then find the fraction of the work done by them.