Ratio and Proportion Questions and Answers for Exams

If $$ {a\over x}+{b\over y}=m$$ and $$ {b\over x}+{a\over y}=n$$ then x:y will be__

If a : b =4 : 5, b: c=20 : 11 and c:d =6 : 7, then value of a : b : c : d will be

The ratio of income of A, B and C is 7: 9: 12 and their expense ratio is 8: 9: 15, if the savings of A is 1/4 of its total income, then the savings of A, B and C What will be the ratio?

If  $$ {A\over2}={B\over 3}={C\over 4}$$ then what is the value of $$ {A+B+C}\over C

The ratio between the ages of a father and his son four year ago was 19:6. If the difference between the ages of the father and son is 26 years, what will be the ratio of their present ages?

The number of students in three classes are in the ratio 2:3:5. If the number of students in each class is increased by 20 the ratio become 4: 5: 7. The total number of students before the increase was

Find the forth proportional to $${ x^{2}b^{2}c^{3}}$$, $${ x^{3}bc^{4}}$$ and $${ x^{4}b^{2}c^{2}}$$.

Rs. 425 is divided among 4 men, 5 women and 6 boys such that the share of a man , a woman and a boy may be ratio of 9:8:4. What is the share of a woman?

If A:B = $$ {3\over 4}$$ : $$ {5\over 2}$$  and B:C= $$ {1\over2}:{3\over 5}$$ then what is the ratio of A:B:C=?

A, B, C and D have to share the profit in the ratio of 4: 8: 11: 15. If there is a difference of Rs 22,000 between the minimum and maximum ratios, what is the sum of the other two ratios?