GMAT-Quantitative Aptitude
GMAT-Quantitative Aptitude
71. A merchant mixes three varieties of rice costing Rs.20/kg, Rs.24/kg and Rs.30/kg and sells the mixture at a profit of 20% at Rs.30 / kg. How many kgs of the second variety will be in the mixture if 2 kgs of the third variety is there in the mixture?
- 1 kg
- 5 kgs
- 3 kgs
- 6 kgs
72. How many litres of water should be added to a 30 litre mixture of milk and water containing milk and water in the ratio of 7 : 3 such that the resultant mixture has 40% water in it?
- 7 litres
- 10 litres
- 5 litres
- None of these
73. How many kgs of Basmati rice costing Rs.42/kg should a shopkeeper mix with 25 kgs of ordinary rice costing Rs.24 per kg so that he makes a profit of 25% on selling the mixture at Rs.40/kg?
- 20 kgs
- 12.5 kgs
- 16 kgs
- 200 kgs
74. How many litres of a 12 litre mixture containing milk and water in the ratio of 2 : 3 be replaced with pure milk so that the resultant mixture contains milk and water in equal proportion?
- 4 litres
- 2 litres
- 1 litre
- 1.5 litres
75. A sample of x litres from a container having a 60 litre mixture of milk and water containing milk and water in the ratio of 2 : 3 is replaced with pure milk so that the container will have milk and water in equal proportions. What is the value of x?
- 6 litres
- 10 litres
- 30 litres
- None of these
76. A zookeeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo?
- 40
- 30
- 50
- 60
77. From a cask of milk containing 30 litres, 6 litres are drawn out and the cask is filled up with water. If the same process is repeated a second, then a third time, what will be the number of litres of milk left in the cask?
- 0.512 liters
- 12 liters
- 14.38 liters
- 15.36 liters
78. In a km race, A gives B a start of 20 seconds and beats him by 40m. However, when he gives B a start of 25 seconds they finish in a dead heat. What is A's speed in m/sec?
- 12.5 m/sec
- 20 m/sec
- 8 m/sec
- 10 m/sec
79. In a kilometre race, A can give B a start of 100 m or 15 seconds. How long does A take to complete the race?
- 150 seconds
- 165 seconds
- 135 seconds
- 66.67 seconds
80. A gives B a start of 10 metres in a 100 metre race and still beats him by 1.25 seconds. How long does B take to complete the 100 metre race if A runs at the rate of 10 m/sec?
- 8 seconds
- 10 seconds
- 16.67 seconds
- 12.5 seconds