=SUMPRODUCT(--(A2:A20="x123"),--(D2:D20=4),C2:C20-B2:B20)

but I get 23


--
HTH

Bob Phillips

"cjjoo" wrote in
message ...

THEIS IS MY PROBLEM:


vehicle no start km end km tyre location
x123 56 65 4
x123 65 75 1
x123 75 89 4


i want to sum the distance the vehicle x123 has travelled when tyre
location is 4.

the result: 89-65=34.

Can i use sum product?


--
cjjoo
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