Table:
0
A
B
C
D
E
1
Model
EIS -Final Prod. Year
# Eng.
Maximum Metric MTOW
Outside Diameter, main passenger deck
2
Airbus A300
1974–2007
2
132.0 tons 171.7 tons
inches (m)
3
Airbus A310
1982–2007
2
164.0 tons
inches (m)
4
Airbus A330
1994-
2
233.0 tons
inches (m)
5
Airbus A340
1993–2012
4
380.0 tons
inches (m)
6
Airbus A350 XWB
2014 (est.)
2
298.0 tons
inches (m)
7
Airbus A380
2007-
4
560.0 tons
inches (m)
8
Boeing 747
1970-
4
412.8 tons
inches (m)
9
Boeing 767
1982-
2
204.1 tons
inches (m)
10
Boeing 777
1995-
2
351.5 tons
inches (m)
11
Boeing 787 Dreamliner
2011
2
245.0 tons
inches (m)
12
Ilyushin Il-86
1980–1994
4
208.0 tons
239inches (6.08 m)
13
Ilyushin Il-96
1992-
4
250.0 tons
239inches (6.08 m)
14
L-1011 TriStar
1972–1985
3
231.3 tons
inches (m)
15
MD DC-10
1971–1989
3
259.5 tons
inches (m)
16
MD MD-11
1990–2001
3
286.0 tons
inches (m)

Questions and formulas:
Question: What is # Eng., when Outside Diameter, Main Passenger Deck is "inches (m)", and when Maximum Metric MTOW is "231.3 tons"?
Formula: SUM(FILTER(C1, (E1="inches (m)")*(D1="231.3 tons")))
Formula2: SUM(FILTER(C2:C16, (E2:E16="inches (m)")*(D2:D16="231.3 tons")))
Level: easy