The time taken by both G and H working
together to complete a job is 8 days less than the time in which G alone can
complete the job. It is also 18 days less than the time in which H alone can
complete the job. Find the time taken by both G and H working together to
complete the job. .
(a) 12 days
(b) 10 days
(c) 16 days
(d) 14 days
4 men and 10 women can do a work in 6 days.
15 men and 6 women can do that work in 3 days. One woman alone can finish the
same work in ______.
(a) 36 days
(b) 108 days
(c) 72 days
(d) 144 days
P can do a piece of work alone in 15 days and
Q can do the same piece of work alone in 60 days. P and Q together worked for 3
days. How many more days are require complete the remaining work if they work
(a) 10 days
(b) 12 days
(c) 9 days
(d) 15 days
Pipes P and Q can fill a tank in 20 hours and
30 hours respectively and pipe R can empty it in 18 hours. If all the three are
opened at 8 a.m by what time will one sixth of the tank be filled? .
(a) 2 pm
(b) 2 am
(c) 4 pm
(d) 6 pm
A tap can fill an empty tank in 15 hours and
another tap can empty one-fourth of the tank in 5 hours. If both the taps are
opened simultaneously, how long would it take for the empty tank to be filled
to half of its capacity? .
(a) 60 hours
(b) 30 hours
(c) 45 hours
(d) 48 hours
One pipe fills a water tank three times
faster than another pipe. If the two pipes together can fill the empty tank in
72 minutes, then how much time will the faster pipe alone take to fill the
(a) 32 minutes
(b) 48 minutes
(c) 72 minutes
(d) 96 minutes
Pipe A can fill a tank in 12 hours and pipe B
can empty the tank in 18 hours. Both pipes are opened at 6 am and after some
time pipe B is closed, and the tank is full at 8 pm on the same day. At what
time was the pipe B closed? .
(a) 10 a.m. .
(b) 8 a.m. .
(c) 9 a.m. .
(d) 11 a.m. .
A pipe can fill a tank in 12 minutes. Another
pipe can fill the tank at 40 gallons/minute. A third pipe can empty the tank in
8 minutes. The three pipes were opened simultaneously. The tank took 8 minutes
to fill. Find the capacity of the tank. .
(a) 240 gallons
(b) 180 gallons
(c) 270 gallons
(d) 360 gallons
Six men or eight women can do a work in 15
days. How many men should work along with four women to complete the work in 10
30 men or 39 women can complete a job in 40
days. If 40 men and 26 women undertake to complete the job, the job will be
completed in _____.
(a) 20 days
(b) 15 days
(c) 25 days
(d) 10 days