sharma can read a book in k minutes. What
part of the book can he read in 8 minutes?.
(k > 8)
(a) 8 + k
A, B and C together can do a work in 22 days.
B and C can do of work in 30 days, In how
many days can A alone do the work?
A and B working together can do a piece of
work in days. B and C working
together can do it in 3 days. C and A working together can do it days. All of them begin the
work at the same time. Find how much time will they take to finish the work by
(a) 1 day
(b) 2 days
(d) None of these
A can do half as much work as B in two —
fifth of the time taken by B. If together they take 20 days, how much time
shall B take to do it alone? .
(a) 15 days
(b) 90 days
(c) 45 days
(d) 60 days
A is 80% as efficient as B. C does two-third
of the work done by A and B together in the same time. If C alone does the work
in 10 days. Then A and C, together can do the work in _________. .
(a) 12 days
(b) 24 days
(c) 18 days
(d) 6 days
A can do a work in 21 days and B in 28 days.
Together they started the work and B left after 4 days. In how many days can A
alone do the remaining work? .
22 skilled men can do a piece of work in 10
days and 45 unskilled men can do the work in 30 days. In how many days can 45
unskilled and 22 skilled men do the work? .
(c) 8.5 .
(d) 7.5 .
A and B can do a work in 12 days and 36 days,
respectively. If they work on alternate days beginning with B, in how many days
will the work be completed? .
50 workers can complete a job in 45 days.
After 9 days, some more workers joined and the job was completed 6 days
earlier. How many new workers joined? .
Thirty men can do a work in 24 days. In how
many days can 20 men do the work, given that time spent per day is increased by
1/3 of the previous time? .