Table:
0
A
B
C
D
E
1
Rank
Rider
Team
Speed
Time
2
1
Ray Pickrell
Triumph
100.07mph
1:30.30.2
3
2
Tony Jefferies
Triumph
98.38mph
1:30.03.0
4
3
Bob Heath
BSA
97.08mph
1:33.17.4
5
4
Hans-Otto Butenuth
BMW
93.75mph
1:36.36.0
6
5
David Nixon
Triumph
93.02mph
1:37.21.0
7
6
B.J.Clark
Norton
92.97mph
1:37.24.6
8
7
Tom Dickie
BMW
91.08mph
1:39.26.0
9
8
Keith Heckles
Norton
86.11mph
1:45.10.8
10
9
Tony Anderson
BMW
85.81mph
1:45.32.0
11
10
Peter Darvill
Honda
80.51mph
1:52.29.4

Questions and formulas:
Question: What was #7 BMW's speed?
Formula: LET(query1,LET(query1,FILTER(A1:E1,C1="bmw"),SUMMARIZE(CHOOSECOLS(query1,4),SUMX(CHOOSECOLS(query1,1)))),FILTER(query1,CHOOSECOLS(query1,2)=7))
Formula2: LET(query1,LET(query1,FILTER(A2:E11,C2:C11="bmw"),SUMMARIZE(CHOOSECOLS(query1,4),SUMX(CHOOSECOLS(query1,1)))),FILTER(query1,CHOOSECOLS(query1,2)=7))
Level: hard