Table:
0
A
B
C
D
E
1
Region
Total Population
Catholic
% Catholic
% of global Catholic pop.
2
Central Africa
83121055
37353218
44.93%
3.47%
3
East Africa
193741900
34872130
17.99%
3.24%
4
North Africa
202151323
2369490
1.17%
0.22%
5
Southern Africa
137092019
24463640
17.84%
2.27%
6
West Africa
268997245
36152847
13.43%
3.36%

Questions and formulas:
Question: what is the maximum total population with % catholic being 1.17%
Formula: MAXIFS(B1,D1,"1.17%")
Formula2: MAXIFS(B2:B6,D2:D6,"1.17%")
Level: easy
Question:  how many total population with catholic being smaller than 31370649.1405057 and region being north africa
Formula: SUM(FILTER(B1, (C1<31370649.1405057)*(A1="North Africa")))
Formula2: SUM(FILTER(B2:B6, (C2:C6<31370649.1405057)*(A2:A6="North Africa")))
Level: easy