Ratio and Proportion - Aptitude 2 (MCQ) questions and answers

11. In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quanity of water to be further added is:

54 ltr
60 ltr
20 ltr
15 ltr

Answer - [ 60 litres ]

12. The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?

24:23
21:22
1:2
3:44

Answer - [ 21:22 ]

13. Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40 : 57. What is Sumit's salary?

Rs 23000
Rs 38000
Rs 12000
Rs 50000

Answer - [ Rs 38000 ]

14. If 0.75 : x :: 5 : 8, then x is equal to:

1.2
11.22
3.3
2.0

Answer - [ 1.2 ]

15. Number of students in institutes A and B were in the ratio of 7 : 15 respectively in 2012. In 2013, the number of students in institute A increased by 25% and number of students in institutes B increased by 26%, then what was the respective ratio between number of students in institutes A and B?

25:33
24:1
25:54
1:2

Answer - [ 25:54 ]

16. Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is:

Answer - [ 4:5 ]

17. A sum of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets Rs. 1000 more than D, what is B's share?

Rs 3000
Rs 2000
Rs 300
Rs 589

Answer - [ Rs 3000 ]

18. Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?

2:3:4
3:4:1
2:1:9
None of these

Answer - [ 2:3:4 ]

19. 8 litres are drawn from a cask filled with wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of the total solution is 16 : 81. How much wine did the cask hold originally?

43 ltr
32 ltr
24 ltr
1 ltr

Answer - [ 24 ltr ]

20. The milk and water in a mixture are in the ratio 7 : 5. When 15 liters of water are added to it, the ratio of milk and water in the new mixture becomes 7 : 8. The total quantity of water in the new mixture is: