
Hi
S1: 2a, b, a, c, 2a + 20
S2: b  2a, a  b, c  a, 2a + 20  c
b  2a + 30 = a  b i.e. 3a  2b = 30 a  b + 30 = c  a c  a + 30 = 2a + 20  c i.e. 3a  2c = 10
Solving them, we get a = 50, b = 60, c = 70
So series S1: 100, 60, 50, 70, 120 and series S2: 40, 10, 20, 50, 80
Now you can easily answer all the questions easily.
Kamal Lohia
