76. If a carton containing a dozen of mirrors is dropped, then which of the following cannot be the ratio of the broken mirrors to the unbroken mirrors?
1) 7 : 5
2) 3 : 1
3) 3 : 2
4) 2 : 1
5) Cannot be determined
77. A bag contains Rs.216 in the form of Rs.1,50 paisa and 25-paisa coins in the ratio of 2 : 3 : 4. The number of 50-paisa coins is
1) 140
2) 175
3) 184
4) 160
5) 144
78. A is twice as fast as B and B is thrice as fast as C. The distance covered by C in 42 min will be covered by B in
1) 14 min
2) 4 min
3) 5 min
4) 8 min
5) 6 min
79. The CP of two dozen mangoes is Rs.32. After selling 18 mangoes at Rs.12 per dozen, the
shopkeeper reduced the rate to Rs.4 per dozen. Then find the loss percentage
1) 15
2) 20
3) 25
4) 37.5
5) Other than those given as options
80. How many kilograms of sugar costing Rs.9 per kg must be mixed with 27 kg of sugar costing Rs.7 per kg so that there may be a gain of 10% by selling the mixture at Rs.9.24 per kg?
1) 60 kg
2) 63 kg
3) 50 kg
4) 77 kg
5) Other than those given as options
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