4 years,hence the ratio of ages of P & Q will be 2:1 and also the sum of their present ages is 46 years.find the present age of P?
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Let the present age of P be p and present age of Q be q.
Sum of their present ages = 46
= > p + q = 46
= > q = 46 - p
After 4 year, age of P = p + 4 After 4 year, age of Q = q + 4 from above, q = 46 - p
So, age of Q after 4 year = 46 - p + 4 = 50 - p
After 4 year:
= > Ratio of their ages = 2 : 1
= > ( p + 4 ) : ( 50 - p ) = 2 : 1
= > 1( p + 4 ) = 2( 50 - p )
= > p + 4 = 100 - 2p
= > p + 2p = 100 - 4
= > 3p = 96
= > p = 32
Hence the present age of P is 32 year.
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