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The respective ratio among the present age of Ram, Rohan and Raj is 3 : 4 : 5. If the average of their present age is 28 years then what would be the sum of the age of Ram and Rohan together after 5 years?
  • a)
    45 years
  • b)
    55 years
  • c)
    52 years
  • d)
    59 years
  • e)
    None of these
Correct answer is option 'D'. Can you explain this answer?
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The respective ratio among the present age of Ram, Rohan and Raj is 3 ...
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The respective ratio among the present age of Ram, Rohan and Raj is 3 ...
Given:
Ratio of Ram's age : Rohan's age : Raj's age = 3 : 4 : 5

Let the present age of Ram, Rohan, and Raj be 3x, 4x, and 5x respectively.

Average of their present age = 28 years

Sum of their present age = (3x + 4x + 5x) = 12x

According to the given information, the sum of their present age is 12x which is equal to 28*3 = 84.

So, 12x = 84
=> x = 7

Hence, Ram's present age = 3x = 3*7 = 21 years

Rohan's present age = 4x = 4*7 = 28 years

After 5 years:
Ram's age = 21 + 5 = 26 years
Rohan's age = 28 + 5 = 33 years

Sum of the age of Ram and Rohan after 5 years = 26 + 33 = 59 years

Therefore, the correct answer is option D) 59 years.
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The respective ratio among the present age of Ram, Rohan and Raj is 3 : 4 : 5. If the average of their present age is 28 years then what would be the sum of the age of Ram and Rohan together after 5 years?a)45 yearsb)55 yearsc)52 yearsd)59 yearse)None of theseCorrect answer is option 'D'. Can you explain this answer?
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