Question
The ratio of the ages of A and B is 3:4. Five years
later, the ratio of their ages will be 4:5. What are their present ages?Solution
Let the present ages of A and B be 3x and 4x, respectively. After 5 years: Age of A = 3x + 5 Age of B = 4x + 5 According to the problem: (3x + 5) / (4x + 5) = 4/5 Cross-multiplying gives: 5(3x + 5) = 4(4x + 5) 15x + 25 = 16x + 20 15x - 16x = 20 - 25 -x = -5 => x = 5 Present Ages: Age of A = 3x = 3(5) = 15 years Age of B = 4x = 4(5) = 20 years Correct Answer: a) A is 15 years, B is 20 years.
Which of the following is incorrect regarding Lakshadweep islands?
How many States in India are Landlocked?
Siachen Glacier is situated to the
With reference to Indian physical features, which of the statements given below is/are correct?
1. Karewas are the thick deposits of glacial clay...
Which Indian state is Uttar Pradesh's neighbor to the west?
Two important rivers- one with its source in Jharkhand (and known by a diff erent name in Odisha), and another, with its source in Odishamerge at a pl...
The Nilgiri Mountain Railway connects which two towns in Tamil Nadu?
Consider the following statements:
1. In India, the Himalayas are spread over five states only.
2. Western Ghats are spread over five stat...
Where is the ‘Gulf of Mannar Marine’ national park situated?
Which of the following is the largest freshwater lake in India?
Relevant for Exams:
