Table:
0
A
B
C
D
E
F
1
company id
name
type
principal activities
incorporated in
group equity shareholding
2
1
Air China
Corporate
Airline
China
18.77
3
2
Air China Cargo
Joint Venture
Cargo airline
China
49
4
3
Air Hong Kong
Joint Venture
Cargo airline
Hong Kong
60
5
4
Dragonair
Subsidiary
Airline
Hong Kong
100
6
5
Cathay Pacific Cargo
Subsidiary
Cargo airline
Hong Kong
100
7
6
Cathay Pacific Catering Services (HK) Limited
Subsidiary
Catering services
Hong Kong
100
8
7
Cathay Pacific Services Limited
Subsidiary
Cargo
Hong Kong
100
9
8
Cathay Pacific Holidays
Subsidiary
Travel agency
Hong Kong
100
10
9
Dragonair Holidays
Subsidiary
Travel agency
Hong Kong
100
11
10
Hong Kong Airport Services
Subsidiary
Ground handling
Hong Kong
100
12
11
Vogue Laundry Service Limited
Subsidiary
Laundry
Hong Kong
100
13
12
China Pacific Laundry Services
Joint Venture
Laundry
Taiwan
45
14
13
VN/CX Catering Services Limited
Joint Venture
Catering services
Vietnam
40
15
14
CLS Catering Services Limited
Joint Venture
Catering services
Canada
30

Questions and formulas:
Question: What is maximum group equity shareholding of the companies?
Formula: MAX(F1)
Formula2: MAX(F2:F15)
Level: easy
Question: What is the largest group equity shareholding and its corresponding company id? 
Formula: TAKE(SORT(SUMMARIZE(A1,SUMX(F1)), 2, -1), 1)
Formula2: TAKE(SORT(SUMMARIZE(A2:A15,SUMX(F2:F15)), 2, -1), 1)
Level: hard