five years ago anu was thrice as old as sonu after 10 year anu will be twice as old as sonu how old are sonu and anu?
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Let Anu's age be x years and sonu's age be y years.
x - 5 = 3 ( y - 5 )
x - 5 = 3y - 15
(1) x - 3y = -10
x + 10 = 2 ( y + 10 )
x + 10 = 2y + 20
(2) x - 2y = 10
By solving equation (1) and (2) by elimination method, we get:
Sonu's age = 20 years
Anu's age = 50 years
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