Present age of Arun is half of Rohan's present age.  After 6 years, Rohan's age will be 4 times of the Sonit's present age.  If Sonit celebrated his 7th birthday 8 years ago, then what will be the present age of Arun ?

27 years

Sonit's present age = 7 + 8 = 15 years

Rohan's age after 6 years = 15 × 4 = 60 years

Present age of Rohan = 60 - 6 = 54 years

Arun's present age =  \(\frac{54}{2}\)= 27 years