The present age of Ravi rsquo s father is 4 times of Ravi rsquo s present age 5 years back Ravi rsqu...........

Quantitative Aptitude (CDS) Problems based on Ages

The present age of Ravi’s father is 4 times of Ravi’s present age. 5 years back, Ravi’s father was seven times as old as Ravi was at that time. What is the present age of Ravi’s father?

84 years

70 years

40 years

35 years

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Explanation:

Let present age of Ravi be x
Present age of Ravi’s father = 4x
According to question 5 years beforeRavi father age = 7×Ravi age
4x − 5 = 7(x − 5)
⇒ 3x = 30 , x= 10 => Present age of Ravi's father is 4x = 4 x 10 = 40.