Question : If the sum of two quantities is equal to three times their difference, then the ratio of the two quantities is:
Option 1: 1 : 3
Option 2: 3 : 1
Option 3: 2 : 1
Option 4: 2 : 3
Correct Answer: 2 : 1
Solution : Let the numbers be $x$ and $y$. The sum of the number is $x + y$. Three times the difference be $3(x-y)$. According to the given conditions, $x + y = 3 (x - y)$ $⇒ x + y = 3x - 3y$ $⇒ 2x = 4y$ $⇒ x = 2y$ ⇒ $\frac{x}{y}=\frac{2}{1}$ Thus, $x:y = 2:1$ Hence, the correct answer is 2 : 1.
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Question : If the square of the sum of two numbers is equal to 4 times their product, then the ratio of these numbers is:
Question : Three cars travelled a distance in the ratio 1 : 2 : 3. If the ratio of the time of travel is 3 : 2 : 1, then the ratio of their speed is:
Question : Two isosceles triangles have equal vertical angles and their areas are in the ratio 9 :16. Then the ratio of their corresponding heights is:
Question : The ratio of the area of two isosceles triangles having the same vertical angle (i.e. the angle between equal sides) is 1 : 4. The ratio of their heights is:
Question : Two numbers are in the ratio 7 : 11. If their HCF is 28, then the sum of the two numbers is:
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile