Ram is 7 years younger than Ravi. In four years of time, Ram will be half of Ravi’s age. In the next year the sum of their ages is _________
(A)15 (B)13 (C)17 (D)19
Answers
Answered by
3
ram's present age = 3 years
Ravi's present age = 10 years
therefore sum of their ages next year = (3+1)=(10+1) = 4+11= 15 years
ANS= (A) 15
Ravi's present age = 10 years
therefore sum of their ages next year = (3+1)=(10+1) = 4+11= 15 years
ANS= (A) 15
kvnmurty:
this is not the algebraic way of doing the exercise.
Answered by
12
Ram's age = R
Ravi's age = V
R + 7 = V
R + 4 = 1/2 ( V + 4 ) => 2 R + 8 = V + 4 => V = 2 R + 4
Hence R + 7 = V = 2 R + 4
R = 3 years and hence V = 10 years
Next year , R + 1 + V + 1 = 15 years
Ravi's age = V
R + 7 = V
R + 4 = 1/2 ( V + 4 ) => 2 R + 8 = V + 4 => V = 2 R + 4
Hence R + 7 = V = 2 R + 4
R = 3 years and hence V = 10 years
Next year , R + 1 + V + 1 = 15 years
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