Q21. How many kg of rice, of cost 9 Rs/kg must be mixed with 27 kg of rice of cost 7 Rs/kg get a gain of 10 % by selling the mixture at 9.24 Rs/kg ?
A. 63
B. 71
C. 65
D. 60
Q22. In what ratio should a kind of sugar at 8.70 Rs/kg be mixed with another kind of sugar at 9.70 Rs/kg so that the mixture be worth 9 Rs/kg ?
A. 3 : 7
B. 4 : 7
C. 7 : 4
D. 7 : 3
Q23. A vessel is filled with a solution of, 3 parts soda and 5 parts rum. How much of the solution must be taken out and replaced with soda so that the solution contains equal amount of sod and rum ?
A. 8/5
B. 5/8
C. 1/5
D. 2/5
Q24. 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 ?
A. 36 Kg
B. 54 Kg
C. 63 Kg
D. 42 Kg
Q25. A mixture of 150 liters of wine and water contains 20% water. How much more water should be added so that water becomes 25% of the new mixture ?
A. 10 liters
B. 20 liters
C. 30 liters
D. 40 liters
Q26. The ratio of expenditure and savings is 3 : 2 . If the income increases by 15% and the savings increases by 6% , then by how much percent should his expenditure increases?
A. 25
B. 21
C. 24
D. 12
Q27. A milk man sells the milk at the cost price but he mixes the water in it and thus he gains 9.09%. The quantity of water in the mixture of 1 liter is :
A. 70.92 ml
B. 90.90 ml
C. 99.09 ml
D. 83.33 ml
Q28. In a mixture of milk and water, there is only 26% water. After replacing the mixture with 7 liters of pure milk , the percentage of milk in the mixture become 76%. The quantity of mixture is:
A. 45 liters
B. 91 liters
C. 65 liters
D. 38 liters
Q29. Equal quantities of three mixtures of milk and water are mixed in the ratio 1:2, 2:3 and 3:4. The ratio of water and milk in the mixture is ?
A. 193 : 122
B. 115 : 201
C. 97 : 102
D. 147 : 185
Q30. In a pot, there is a mixture of milk and water in the ratio 4 : 5. If it is filled with an additional 8 litres of milk, the pot would be full and ratio of milk and water would become 6 : 5. Find the capacity of the pot ?
A. 11 lit.
B. 33 lit.
C. 22 lit.
D. 44 lit.
