65. A can contain a mixture of two liquids A and B in the ratio 7: 5. When 9 litres of a mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7: 9. How many litres of liquid A was contained by the can initially?
(A) 11
(B) 10
(C) 21
(D) 23
66. In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 kg?
(A) 3 : 2
(B) 7 : 5
(C) 7 : 3
(D) 3 : 7
67.The angle between the minute hand and the hour hand of a clock when the time is 8.30, is:
(A) 600
(B) 750
(C) 850
(D) 900
68. At what angle the hands of a clock are inclined at 15 minutes past 5?
(A)
(B)
(C)
(D)
Q.69 In what time will a train 100 metres long cross an electric pole, if its speed be 144 km/hr ?
(a) 2.5 second
(b) 4.25 second
(c) 5 second
(d) 12.5 second
Q.70 A train 280 m long, running with speed of 63 km/hr will pass a tree in :
(a) 15 sec
(b) 16 sec
(c) 18 sec
(d) 20 sec
Q.71 How long does a train 110 metres long running at the speed of 72 km/hr take to cross a bridge 132 metres in length?
(a) 9.8 sec
(b) 12.1 sec
(c) 12.42 sec
(d) 14.3 sec
Q.72 A sum of Rs. 25000 amounts to Rs. 31000 in 4 years at the rate of simple interest what is the rate of interest?
(a) 3%
(b) 4%
(c) 5 %
(d) 6 %
(e) None of these
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