Enlargement of 2.
if it were a reduction it'd be getting smaller..
A=((40+64)/2)*18= 936 units^2
The answer would be the first choice which is d = n + 10, d = 3n. Deepak is 10 years older than Nina, so knowing this, the equation cancels out B and D. And Deepak is 3 times Nina's age, not Nina's age is three times Deepak's. It is not the other way around.