1. A survey is taken of 30 people on Cottesloe Beach todetermine how safety cons

Question

1. A survey is taken of 30 people on Cottesloe Beach todetermine how safety conscious they are. It found that 20 swimbetween the flags, 18 wear sunscreen and 9 do both. how many ofthese people observed neither safety measure? a. 0    b. 1   c. 2 d.3    e. 4 1. A survey is taken of 30 people on Cottesloe Beach todetermine how safety conscious they are. It found that 20 swimbetween the flags, 18 wear sunscreen and 9 do both. how many ofthese people observed neither safety measure? a. 0    b. 1   c. 2 d.3    e. 4

Explanation / Answer

The answer is B. 9 people do both so you subtract 9 from 20 and 9 from 18. thatleaves 11 people that only swim between the flags, and 9 peoplethat only wear sunscreen. Then you simply add: 11 (swim betweenflags) + 9 (both) + 9 (sunscreen) = 29. Which leaves 1

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