6.  If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be: 
a.  4 days 
b.  5 days 
c.  6 days 
d.  7 days 
View Answer Report Discuss 5050! 
Answer: (a).4 days

7.  A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it? 
a.  8 hours 
b.  10 hours 
c.  12 hours 
d.  24 hours 
View Answer Report Discuss 5050! 
Answer: (c).12 hours

8.  A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in: 
a.  15 days 
b.  20 days 
c.  25 days 
d.  30 days 
View Answer Report Discuss 5050! 
Answer: (c).25 days

9.  A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work? 
a.  23 days 
b.  37 days 
c.  37(1/2) days 
d.  40 days 
View Answer Report Discuss 5050! 
Answer: (c).37(1/2) days

10.  A machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M. while machine P is closed at 11 A.M. and the remaining two machines complete work. Approximately at what time will the work (to print one lakh books) be finished ? 
a.  11:30 A.M. 
b.  12 noon 
c.  12:30 P.M. 
d.  1:00 P.M. 
View Answer Report Discuss 5050! 
Answer: (d).1:00 P.M.
