Table:
0
A
B
C
D
E
F
G
1
Year
Lansing (LAN)
Detroit (DTW)
Grand Rapids (GRR)
Flint (FNT)
Kalamazoo (AZO)
Saginaw (MBS)
2
2006
$370.61
$322.83
$413.74
$298.89
$472.93
$441.26
3
2007
$364.39
$307.29
$420.68
$281.37
$471.01
$441.08
4
2008
$397.75
$334.18
$463.96
$314.89
$517.32
$481.39
5
2009
$434.59
$313.67
$409.85
$275.23
$500.55
$434.69
6
2010
$482.76
$353.75
$377.29
$298.40
$563.92
$470.47
7
2011
$433.59
$378.55
$400.11
$334.90
$579.23
$474.77
8
2012
$417.92
$404.96
$445.80
$372.96
$599.39
$465.86

Questions and formulas:
Question: What was the passenger fare for Lansing, when the passenger fare for Kalamazoo was $599.39?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,F1="$599.39"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,F2:F8="$599.39"),2))
Level: medium
Question: For how many years did Detroit have a passenger fare of $307.29?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,C1="$307.29"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,C2:C8="$307.29"),1))
Level: medium
Question: What was the passenger fare for Grand Rapids, when the passenger fare for Detroit was $378.55?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,C1="$378.55"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,C2:C8="$378.55"),4))
Level: medium
Question: Before the year 2010, and when Kalamazoo had a passenger fare of $517.32, what was the passenger fare for Detroit?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,(A1<2010)*(F1="$517.32")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,(A2:A8<2010)*(F2:F8="$517.32")),3))
Level: medium