Question

Everyone in Biba's neighbourhood is permitted to swim at Barton Pool at sometime during each day that it is open. No children under the age of 6 are permitted to swim at Barton Pool between noon and 5 P.M. From 5 P.M. until closing, Barton Pool is reserved for adults only.
If all the sentences above are true, then which one of the following must be true?

• A. Few children under the age of 6 live in Biba's neighbourhood
• B. If Biba's next door neighbour has a child under the age of 6, then Barton Pool is open before noon
• C. If most children who swim in Barton Pool swim in the afternoon, then the pool is generally less crowded after 5 P.M.
• D. On day's when Barton Pool is open, at least some children swim there in the afternoon

Answer 1

The correct option is B If Biba's next door neighbour has a child under the age of 6, then Barton Pool is open before noon

According to the argument that children under six are not allowed from 12 to 5 P.M. and also after 5 P.M. , to closing time . This means that they can go to the pool only before noon. Since everyone in the neighbourhood is permitted to swim at the pool , if the neighbourhood has a child under six, then the pool must be open for him / her before noon. Hence, option (b) is the correct choice.