Question 856896
T4 +  T5 = 32
a +3d +  a+ 4d = 32
2a +  7d = 32......(1)
T2  + T3 = 16
a+ d +  a+ 2d = 16
2a +  3d = 16......(2)
solving these equation by elimination method, 
4d = 16
d =4