2) Five years ago, Nur was thrice as old as Sonu .Ten years later, Nur will be twice as old as Sonu. How old are Nur and Sonu ?
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Answer:
50,20
Step-by-step explanation:
Let nur be x years old and let sonus age be y years old
Atq,
X-5=3(y-5)
x-5=3y-15
X+10=3y - - - (1)
X+10=2(y+10)
x+10=2y+20
X-10=2y - - - - (2)
Subtracting 1 and 2,
20=y
X-10=40
X=50
Nur is 50 yrs and Sonu is 20
Another relation is given in the problem that ten years later, Nuri is twice as old as Sonu. Now we can solve the equation (i) and (ii) to get values of x and 'y' or present ages of Nuri and Sonu. Hence, the present ages of Nuri and Sonu are 50 years and 20 years respectively.