51). A dishonest milk man professes to sell his milk at cost price, but he mixes it with water and thereby gains 20%. Find the percentage of water in the mixture.
| A). 15% |
| B). 20% |
| C). \( \Large 16\frac{2}{3} \)% |
| D). \( \Large 6\frac{2}{3} \)% |
|
52). 600 students took an examination 60% of boys and 80% of girls passed the examination. If the total percentage of pass is 50%. How many girls appeared in the examination?
| A). 150 |
| B). 200 |
| C). 250 |
| D). 175 |
|
53). A dishonest milk man purchases milk at Re.1 per litre and mixes 5 litre of water In it. If now selling at Re.1 per litre, he earns a profit of 25% then how much milk he purchased?
| A). 16 litres |
| B). 25 litres |
| C). 18 iitres |
| D). 20 litres |
|
54). A man purchased a horse and carriage for Rs.1800. He sold the horse at a profit of 20% and carriage at a profit of 30%. His total profit was \( \Large 25\frac{5}{6} \)%. Find the cost price of the horse and carriage separately.
| A). Rs.1200, 600 |
| B). Rs.1050, 750 |
| C). Rs.1090, 800 |
| D). Rs.1300, 500, |
|
55). A man lends Rs. 2000 for 3 years. A part he lends on 5% and the rest on 7% and receivesRs.330 as interest. How much money he lent on each case.
| A). Rs.500, Rs.1500 |
| B). Rs.400, Rs.1600 |
| C). Rs.700, Rs.1300 |
| D). Rs 600, Rs.1400 |
|
56). In a mixture of milk and water the proportion of water by weight was 75%. If in the 60 gms mixture 15 gms, water was added, what would be the percentage of water in the new mixture?
| A). 0.75 |
| B). 0.88 |
| C). 0.9 |
| D). None of these |
|
57). Sri Ganesh bought 40kgs of wheat at Rs.12.50 per kg and 25 kgs of it at Rs.15,10 per kg. He mixed them together. At what rate should he sell the mixture to earn 10% profit?
| A). Rs.13.50 |
| B). Rs.13.25 |
| C). Rs.14.75 |
| D). Rs.14.85 |
|
58). Manish bought 25 kg ofrice at Rs.32 per kg and 15 kg of rice at Rs.36 per kg. What profit did he get when he mixed the two varieties together and sold it at Rs.40.20 per kg ?
| A). 0.25 |
| B). 0.4 |
| C). 0.3 |
| D). 0.2 |
|
59). A vessel contains 100 litres mixture of milk and water in the respective ratio of 22 : 3. 40 litres of the mixture is taken out from the vessel and 4.8 litres of pure milk and pure water each is added to the mixture. By what percent is the quantity of water in the final mixture less than the quantity of milk?
| A). \( \Large 78\frac{1}{2} \) |
| B). \( \Large 79\frac{1}{6} \) |
| C). \( \Large 72\frac{5}{6} \) |
| D). 76 |
|
60). There was 120 litres of pure milk in a vessel. Some quantity of milk was taken out and replaced with 23 litres of water in such a way that the resultant ratio between the quantities of milk and water in the mixture was 4 : 1 respectively. Again 231itres of the mixture was taken out and replaced with 27 litres of water. What is the respective ratio of milk and water in the resultant mixture?
| A). 58 : 37 |
| B). 116 : 69 |
| C). 69 : 43 |
| D). 368 : 227 |
|
