Table:
0
A
B
C
D
E
1
($ in millions)
2
For the year ended December 31:
2019
2018
Yr.-to-Yr. Percent Change **
Yr.-to-Yr. Percent Change Adjusted for Currency **
3
Cloud & Cognitive Software external revenue
$23,200
$22,209
4.5%
6.2%
4
Cognitive Applications
$ 5,765
$ 5,633
2.3%
3.9%
5
Cloud & Data Platforms
9,499
8,603
10.4
12.3
6
Transaction Processing Platforms
7,936
7,974
(0.5)
1.4

Questions and formulas:
Question: What was the average Cloud & Cognitive Software external revenue in 2019 and 2018?
Formula: (B3 + C3) / 2
Formula2: (B3 + C3) / 2
Level: Calculation
Question: What percentage of Cloud & Cognitive Software external revenue was Transaction Processing Platforms in 2019?
Formula: B6 / B3
Formula2: B6 / B3
Level: Calculation
Question: What is the average of Cloud & Data Platforms in 2019 and 2018?
Formula: (B5 + C5) / 2
Formula2: (B5 + C5) / 2
Level: Calculation