Mathematics, 24.04.2020 19:29 nnyyy6043

An investigation of a number of automobile accidents revealed the following information:
18 accidents involved alcohol and excessive speed.
26 involved alcohol.
12 accidents involved excessive speed but not alcohol.
21 accidents involved neither alcohol nor excessive speed.
a) How many accidents were investigated?

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An investigation of a number of automobile accidents revealed the following information:
18 a...

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