1.P and Q can finish a work in 15 and 10 days respectively. Q starts the work and leaves it after 5 days. The number of days in which P can complete the work is : (2)
(1) 6-1/2 days
(2) 7-1/2 days
(3) 8 days
(4) 9 days
2. A tank can be filled by pipe A in 2 hours and by pipe B in 3 hours. An outlet C can empty the tank is 6 hours. If all the three rare opened simultaneously, the tank will be filled in _____ (2)
(1) 1 hour
(2) 1-1/2 hours
(3) 2 hours
(4) 1 1/3 hours
3. The difference (in rupees) in discounts between two successive discounts of 8% each and a single discount of 16% on Rs. 1,000 is ____ (2)
(1) 64
(2) 6.40
(3) 4.60
(4) 46
4. The least number which when divided by 35, 45, 55 leaves the remainder 18, 28 and 33 respectively is ____ (4)
(1) 3482
(2) 2468
(3) 3265
(4) 3448
5. The volume of a solid hemisphere is numerically equal to its total surface area. Its radius is ____ (3)
(1) 3 units
(2) 1 1/2 units
(3) 4 1/2 units
(4) 9 units