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Quantitative Aptitude Practice Test: Ratio and Proportion
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Here are some tips for solving ratio and proportion problems: - Read the ratio correctly: For example, 2 pink to 6 red should be expressed as 2:6, not 6:2. - Note the units in your calculations - The ratio between two quantities should be of the same kind - When comparing two ratios, their units must be similar - If the ratios are equal like a fraction, then only comparison of 2 ratios can be performed - In ratio, if both the antecedent and the consequent are multiplied or divided by the same number (except 0) then the ratio will remain the same - Write the ratios in their three... Show more
Quantitative Aptitude Practice Test: Ratio and Proportion
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25 Questions

1. The ratio of gold and silver in a ring is 4 : 7. The ring costs 61100 rupees. Find the price of the gold in the ring if silver costs 1/10th of gold.
2. There are 5 terms in a series 94, 85, 81, 80, 90. If the first two numbers are increased by 20 and the last two numbers are increased by 20%, find the ratio of the terms of the series then formed.
3. There are 5 terms a, b, c, d and e in a series. A = 4b, b = 7c, c = 2d, d = half of e and e = 12. Find the ratio of the series.
4. The ratio platinum to silver in a bracelet is 5 : 7. If the price of platinum is 1/10th the price of silver, find the cost of the bracelet if the cost of platinum in the bracelet is 24000 rupees.
5. A series of 4 digits with the terms 55, 66, 77 and 88 is first arranged in descending order and increased in the following way 20%, 40%, 60% and 120%. Find the ratio of the new series formed.
6. The students of science commerce and arts are in a ratio 2 : 3 : 2. If the pass percentage of commerce is 40% and the total students passing in commerce are 12, find the total students combined of all three sections.
7. The ratio of two numbers changes from 14 : 15 to 10 : 11 when 40 is subtracted from it, find the numbers.
8. The total number of workers at a factory is 120. There are 5 departments with 20, 30, 30, 20 and 20 employees, respectively. If the number of employees of the first two departments increase by 40% and the employees of the rest of the departments decrease by 60%, find the new ratio of employees.
9. The sum of three numbers is 123. If the numbers are in a ratio 1 : 2 : 3, find the difference between the largest and the smallest number.
10. 4 numbers a, b, d and c are in proportion. If a = 9c, c = 3b, find the value of d in terms of b.
11. A : b :: c : d = 2 : 3 :: 4 : 6. A = 125 find b + c – d.
12. The total of 3 numbers is 121. If the numbers are in a ratio 3 : 4 : 4, find the ratio of the numbers when 11 is added to each number.
13. The first three terms of a series are increased by 50% and the last 3 terms of the series are decreased by 50%. If the series so formed is 33, 42, 48, 50, 55, 60, find the ratio of the initial series.
14. The ratio of two numbers is 8 : 9. Find their product if their sum is 187.
15. The ratio of ages of 2 sisters is 4 : 5. After 7 years the ratio of their ages will be 5 : 6. Find their current ages.
16. Work done by 5 men in a day is equal to the work done by 12 children in a day. Find the ratio of their per person efficiencies.
17. The age of 3 people are in a ratio 7 : 11 : 12. If the sum of their ages is 45, find the difference between the ages of the eldest and the youngest in months.
18. 4 numbers d, b, c and a are in proportion. Find the value of a in terms of b if d = 2b and b = 5c.
19. The ratio of ages of two brothers is 6 : 7. Find the age of the elder brother if at the time of the birth of younger brother the elder brother was 6 years old.
20. There are 221 employees in a company. If there are 2 departments and the employees in the first department are 30% less than the employees in the second department, find the ratio of employees of the first department to the number of employees in the second department.
21. There are 30 employees in an office. If the average age of the first 15 employees is half the average age of the rest of the employees. Find the ratio of the average ages of the employees of the two groups after 6 years. The total age of the employees is 1125 years.
22. A number is twice a second number which in turn is 3 times the third number. Find the ratio of the series.
23. The ratio of two numbers is 11 : 12. If the sum of the numbers is 253, find the difference between the numbers.
24. 4 numbers are in a ratio 1 : 2 : 3 : 4. The numbers are increased by 40%, 30%, 20% and 10% respectively. Find the new ratio.
25. There are a total of 1236 students in a school. If the boy to girl ratio is 1 : 2, find the difference between number of girls and boys.

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