**Question 1:**In what proportion must tea at Rs. 7.50 per kg be mixed with tea at Rs. 10.50 per kg to produce a mixture worth Rs. 8.50 per kg?

[A] 1 : 2

[B] 2 : 1

[C] 1 : 1

[D] 2 : 3

**Question 2:**Metal A costs Rs. 8.40 per gm and Metal B Rs. 0.21 per gm. In what proportion must these metals be mixed so that gram of the mixture may be worth Rs. 5.67?

[A] 1 : 2

[B] 1 : 3

[C] 2 : 1

[D] 2 : 3

**Question 3:**A 15-litre mixture contains 20% alcohol and the rest water. If 3 litres of water is mixed in it, then the percentage of alcohol in the new mixture will be

[A] 17%

[B]

[C]

[D] 15%

**Question 4:**A mixture of 20 kg of water and spirit contains 10% water. How much water must be added to this mixture to raise the percentage of water to 25%?

[A] 4 kg

[B] 5 kg

[C] 8 kg

[D] 30 kg

**Question 5:**A sum of money is sufficient to pay Sachin’s salary of 45 days and kale’s salary for 60 days. For how many days can the sum pay the salary of both?

[A] 25 days

[B] 280/11 days

[C] 180/7 days

[D] 270/11 days

**Question 6:**A grocer buys two kinds of rice at Rs. 1.80 and Rs. 1.20 per kg respectively. In what proportion should these be mixed, so that by selling the mixture at Rs. 1.75 per kg 25% may be gained?

[A] 2 : 1

[B] 3 : 2

[C] 3 : 4

[D] 1 : 2

**Question 7:**A and B are two alloys of iron and silver prepared by mixing metals in the ratio 4 : 5 and 7 : 5 respectively. If equal quantities of alloys are melted to form a third alloy C, the ratio of iron to silver in C is

[A] 37 : 35

[B] 19 : 18

[C] 31 : 25

[D] 29 : 35

**Question 8:**The ratio of milk and water in 66 kg of adultered milk is 5 : 1. Water is added to make the ratio 5 : 3. The quantity of water added is

[A] 22 kg

[B] 24.7 5kg

[C] 16.50 kg

[D] 20 kg

**Question 9:**Mixture of alcohol and water contains 35% of alcohol by volume. Then, 40 ml of water is added to such a mixture of 100 ml. The percentage of alcohol in the new mixture is

[A] 30%

[B] 35%

[C] 25%

[D] 20%

**Question 10:**A mixture, 729 ml in volume, 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?

[A] 600 ml

[B] 710 ml

[C] 520 ml

[D] None of these

**Question 11:**A mixture of 24 litres contains water and milk in the ratio 3: 5. How much water must be added to this mixture to reverse the ratio?

[A] 20 litres

[B] 24 litres

[C] 18 litres

[D] 16 litres

**Question 12:**A trader mixes two varieties of tea costing Rs 40 per kg and rupees 50 per kg in the ratio 5: 4. If the mixture is sold at rupees 48 per kg question, then what is the gain percentage?

[A] 7.5 %

[B] 8%

[C] 2.5 %

[D] 5%

**Question 13:**Two containers of equal volume contains milk and water in the ratio 3: 5 and 5: 3, respectively. If the contents of both containers are emptied into a third one, what would be the ratio of milk to water in that container?

[A] 1: 1

[B] 9: 25

[C] 25: 9

[D] None of these

**Question 14:**From two ornament Weighing 18 gram and 24 gram containing gold and silver in the ratio of 2: 1 and 5: 1 respectively, a new ornament is made. What is the amount of gold in the new ornament?

[A] 10 gram

[B] 12 gram

[C] 32 gram

[D] 28 gram

**Question 15:**A and B are two alloys of gold and copper prepared by mixing metals in proportions 5: 3 and 5: 11 respectively. If equal quantities of this alloys are melted to a third alloy C, what would be the proportion of gold and copper in the alloys thus formed?

[A] 25: 33

[B] 33: 25

[C] 15: 17

[D] 17: 15