Table:
0
A
B
C
D
E
1
Salary range
Indians
Pakistanis
Nepalese
Working force of HK
2
<4000
11.9%
2.9%
7.3%
10.4%
3
4,000-9,000
24.7%
51.4%
41.1%
32.8%
4
10,000-14,999
15.6%
27.8%
37.1%
23%
5
15,000-19,999
9.8%
6.4%
11%
11.5%
6
20,000-24,999
8.2%
4.5%
2.2%
7.8%
7
25,000-29,999
4.2%
1.3%
0.8%
3.4%

Questions and formulas:
Question: If the working force of HK is 32.8%, what are the Pakistanis' %? 
Formula: FILTER(C1,E1="32.8%")
Formula2: FILTER(C2:C7,E2:E7="32.8%")
Level: easy
Question: If the Indians are 8.2%, what is the salary range?
Formula: FILTER(A1,B1="8.2%")
Formula2: FILTER(A2:A7,B2:B7="8.2%")
Level: easy
Question: If the working force of HK is 10.4%, what is the salary range?
Formula: FILTER(A1,E1="10.4%")
Formula2: FILTER(A2:A7,E2:E7="10.4%")
Level: easy
Question: If the nepalese is 37.1%, what is the working force of HK?
Formula: FILTER(E1,D1="37.1%")
Formula2: FILTER(E2:E7,D2:D7="37.1%")
Level: easy
Question: If the salary range is 4,000-9,000, what is the Indians %?
Formula: FILTER(B1,A1="4,000-9,000")
Formula2: FILTER(B2:B7,A2:A7="4,000-9,000")
Level: easy