Q1. The speed of boat in downstream is ‘X-4’ kmph. The time taken by a boat to cover a certain distance in Downstream and Upstream is 6 hours and 12 hours respectively. If boat takes 5 hours to Cover 40 km in Upstream, then find the value of X?
(a) 16 kmph
(b) 20 kmph
(c) 22 kmph
(d) 24 kmph
(e) 18 kmph
Q2. Three pipes A, B and C are connected to a tank while A and B are inlet pipes and C is an Outlet pipe. Pipe A and B can fill the tank in ‘X-2’ hours and ‘X+2’ hours respectively while Pipe C can empty the tank in 16 hours. Find out the time taken by Pipe A to fill the tank, if Pipe B and Pipe C together can fill the tank in 48 hours.
(a) 6 hours
(b) 7 hours
(c) 10 hours
(d) 8 hours
(e) 9 hours
Q4. If two dices are rolled simultaneously, then find the probability of getting a sum which is divisible by 3 but not by 6?
(a) 7/36
(b) 1/9
(c) 5/18
(d) 3/36
(e) 1/6
Q5. A can do 60% of a work in 18 days, while B can do 50% of the work in 12 days. A and B start work together and after 10 days A left the work and C joined them. If total work completed in 12 days, then find in how many days C alone can complete the same work?
(a) 12 days
(b) 14 days
(c) 18 days
(d) 10 days
(e) 8 days
Solutions