(A) 33 years

(B) 34 years

(C) 35 years**(D) 36 years**

A+B/2 =30 A+B=60 ……….. (i)

B+C/2 =32 B+C=64 …………(ii)

C+A/2 = 34 ⇒ C + A = 68 ….. (iii)

Subtract (i) and (ii)

A+ B = 60

A+B+C=+64

A-C=-4 ….. (iv)

A-C=-4 .. . (iv)

Add (iii) and (iv)

C +A= 68

A – C= – 4

2A= 64

A= 32

Put A = 32 in (iii)

C + 32 = 68

C = 68 – 32

C = 36