| 1. | If 50% of x = 30% y, then x : y is ? | |
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2 : 3
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5 : 3
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3 : 2
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3 : 5
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Report Question| 2. | The prices of a school bag and a shoe are in the ratio 7 : 5. The price of a school bag is 200 more than the price of a shoe. Then the price of a shoe is ? | |
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200
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700
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500
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1,200
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| 3. | Rama’s expenditures and savings are in the ratio 5 : 3. If her income increases by 12% and expenditure by 15%, then by how much per cent do her savings increase ? | |
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12%
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7%
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8%
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13%
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| 4. | In a class, the number of girls is 20% more than that of the boys. The strength of the class is 66. If 4 more girls are admitted to the class, the ratio of the number of boys to that of the girls is ? | |
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1 : 2
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3 : 4
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1 : 4
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3 : 5
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| 5. | The ratio of the number of boys to that of girls in a school is 4 : 1. If 75% of boys and 70% of the girls are scholarship-holders, then the percentage of students who do not get scholarship is ? | |
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50%
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28%
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75%
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26%
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| 6. | 8 litres of water is added to 32 litres of a solution containing 20% of alcohol in water. What is the approximate concentration of alcohol in the solution now ? | |
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24%
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16%
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8%
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12%
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| 7. | 300 grams of sugar solution has 40% of sugar in it. How much sugar should be added to make it 50% in the solution ? | |
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40 gram
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10 gram
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60 gram
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80 gram
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| 8. | The ratio in which two sugar solutions of the concentrations 15% and 40% are to be mixed to get a solution of concentration 30% is ? | |
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2 : 3
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3 : 2
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8 : 9
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9 : 8
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| 9. | How much pure alcohol has to be added to 400 ml of a solution containing 15% of alcohol to change the concentration of alcohol in the mixture to 32% ? | |
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60 ml
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100 ml
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128 ml
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68 ml
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| 10. | In one litre of a mixture of alcohol and water, water is 30%. The amount of alcohol that must be added to the mixture so that the part of water in the mixture becomes 15% is ? | |
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1000 ml
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700 ml
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300 ml
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900 ml
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