The product of the ages of Syam and Sunil is 240. If twice the age of Sunil is more than Syam's age by 4 years, what is Sunil's age?  Choose one.
A) 8
B) 9
C) 10
D) 11
E) 12
we can solve the quadratic equation by factorization as,   x(x−2)=120⇒x2−2x−120=0⇒(x−12)(x+10)=0⇒x=12 or −10   Since x is age and cannot be negative, x=12   Answer is 12.
<result>E</result>
The product of the ages of Syam and Sunil is 240. If twice the age of Sunil is more than Syam's age by 4 years, what is Sunil's age?