Question

Find the sum of the first 20
terms.
1.5,1.45,1.40,1.35....

Answer 1

20.5

Explanation:



Answer 2

1.5,1.45,1.40,1.35,1.30,1.25,1.20,1.15,1.10,1.05,1.00,0.95,0.90,0.85,0.80,

0.75,0.70,0.65,0.60,0.55

You can look at it like: -5 for every term.