Question : If 35% of A's income is equal to 25% of B's income, then the ratio of A's income to B's income is:
Option 1: 7 : 5
Option 2: 5 : 7
Option 3: 4 : 7
Option 4: 4 : 3
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Correct Answer: 5 : 7
Solution : Given: 35% of A = 25% of B ⇒ $\frac{35}{100}$ × A = $\frac{25}{100}$ × B ⇒ $\frac{A}{B}=\frac{5}{7}$ ⇒ A : B = 5 : 7 Hence, the correct answer is 5 : 7.
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Question : The income of A is $\frac{2}{3}$ of B's income and the expenditure of A is $\frac{3}{4}$ of B's expenditure. If $\frac{1}{3}$ of the income of B is equal to the expenditure of A, then the ratio of the savings of A to those of B is:
Question : The sum of two numbers is equal to 25 and their difference is 20. The ratio of the two numbers is:
Question : If the ratio of corresponding sides of two similar triangles is $\sqrt{5}: \sqrt{7},$ then what is the ratio of the area of the two triangles?
Question : If A's income is 60% less than B's income, then B's income is what percentage more than that of A's income?
Question : The income of A is 80% of B's income and the expenditure of A is 60% of B's expenditure. If the income of A is equal to 90% of B's expenditure, then by what percentage are the savings of A more than B's savings?
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