61. A jar full of whisky
contains 40% alcohol. A part of this whisky is replaced by another containing
19% alcohol and now the percentage uf alcohol was found to be 26%. The quantity
of whisky replaced is. [Hotel Mgt 1991]
1/3 2/5
2/3 3/5
62. Two vessels A and B
contain milk and water mixed in the ratio 8: 5 and 5 : 2 respectively. The
ratio in which these two mixtures be mixed to get a new mixture containing milk
and water in the ratio 9 : 4 ?
A.2:7 B.3:5
C.5:2 D.5:7
63. In what ratio must
water be mixed with milk costing Rs. 12 per litre to obtain a mixture worth of
Rs. 8 per litre?
3:2 1:2
2:3 2:1
64. A man covered a
distance of 2000 km in 18 hours partly by bus at72 kmph and partly by train at
160 kmph. The distance covered by bus is
A.1280 km B.860 km
C.720 km D.640 km
65. 729 ml of mixture contains milk and
water in the ratio 7 : 2. How much more water is to be added to get a new
mixture containing milk and water in the ratio 7 : 3 . [Railways 1992]
A.79 ml B.72
ml
C.81 ml D.91
ml
66. A merchant has 1000 kg of sugar, part
of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the
whole. The quantity sold at 18% pforit is
A.640 kg B.600 kg
C.560 kg D.400 kg
67. A sum of Rs. 4000 is
lent out in two parts, one at 8% simple interest and the other at 10% simple
interest. If the annual interest is Rs. 352, the sum lent at 8% is
A.Rs. 1600 B.Rs. 1800
C.Rs. 2400 D.Rs. 2800
68. A jar full of whisky
contains 40% alcohol. A part of this whisky is replaced by another containing
19% alcohol and now the percentage uf alcohol was found to be 26%. The quantity
of whisky replaced is. [Hotel Mgt 1991]
A.1/3
C.2/5
B.2/3
D.3/5
