Ravi is 12 years younger than Surya Ravi 39 s age is 40 of the sum of his and Surya 39 s age What wi...........

Quantitative Aptitude (CGL) Problems based on Ages

Ravi is 12 years younger than Surya. Ravi's age is 40% of the sum of his and Surya's age. What will be Surya's age 9 years hence?

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Explanation:

According to the question :
= > Age of Ravi = 40% of sum of ages of Ravi and Surya
= > ( a - 12 ) years = 40 / 100 of ( 2a - 12 ) years
= > a - 12 = 2 / 5 x ( 2a - 12 )
= > 5( a - 12 ) = 2( 2a - 12 )
= > 5a - 60 = 4a - 24
= > 5a - 4a = 60 - 24
= > a = 36
Thus,
= > Age of Surya after 9 years
= { ( a ) + 9 } years = ( a + 9 ) years = ( 36 + 9 ) years = 45 year