Question

A survey of 800 students yielded the following information: 519 were seniors, 430 were commuters, and 300 of the seniors were commuters. How many of the 800 surveyed students were seniors or were commuters?

Answer 1

The number is
`(S \ u \ C ) = 649`

Explanation:

From the question we are told that

The sample size is n = 800

The number of seniors is S = 519

The number of commuters is C = 430

The number of of seniors that are commuters is
`(S\ n \ C )= 300`

Generally the number of 800 surveyed students who were seniors or were commuters is mathematically evaluated as

`(S \ u \ C ) = S + C - ( S \ n \ C )`

=>
`(S \ u \ C ) = 519 + 430 - 300`

=>
`(S \ u \ C ) = 649`