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The ratio of ages of Niraj and Dhiraj was 6 : 7, a year ago. Four years from now, the ratio of their ages will be 7 : 8. What is the present age of Dhiraj?
  • a)
    36 years
  • b)
    42 years
  • c)
    48 years
  • d)
    Cannot be determined
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The ratio of ages of Niraj and Dhiraj was 6 : 7, a year ago. Four year...
Let the age of Niraj and Dhiraj one year ago be 6x and 7x respectively
Present age of Niraj and Dhiraj are (6x + 1) and (7x + 1) years respectively
Their ages four years from now will be (6x + 1 + 4) and (7x + 1 + 4) years respectively
⇒ (6x + 5) and (7x + 5) years respectively
Given the ratio of their ages will four years from now will be 7 : 8
⇒ (6x + 5)/(7x + 5) = 7/8
⇒ 8 × (6x + 5) = 7 × (7x + 5)
⇒ 48x + 40 = 49x + 35
⇒ 49x - 48x = 40 - 35
⇒ x = 5 years
∴ Present age of Dhiraj = (7 × 5) + 1 = 36 years 
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The ratio of ages of Niraj and Dhiraj was 6 : 7, a year ago. Four years from now, the ratio of their ages will be 7 : 8. What is the present age of Dhiraj?a)36 yearsb)42 yearsc)48 yearsd)Cannot be determinedCorrect answer is option 'A'. Can you explain this answer?
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The ratio of ages of Niraj and Dhiraj was 6 : 7, a year ago. Four years from now, the ratio of their ages will be 7 : 8. What is the present age of Dhiraj?a)36 yearsb)42 yearsc)48 yearsd)Cannot be determinedCorrect answer is option 'A'. Can you explain this answer? for SSC 2024 is part of SSC preparation. The Question and answers have been prepared according to the SSC exam syllabus. Information about The ratio of ages of Niraj and Dhiraj was 6 : 7, a year ago. Four years from now, the ratio of their ages will be 7 : 8. What is the present age of Dhiraj?a)36 yearsb)42 yearsc)48 yearsd)Cannot be determinedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for SSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The ratio of ages of Niraj and Dhiraj was 6 : 7, a year ago. Four years from now, the ratio of their ages will be 7 : 8. What is the present age of Dhiraj?a)36 yearsb)42 yearsc)48 yearsd)Cannot be determinedCorrect answer is option 'A'. Can you explain this answer?.
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