At a summer camp 23 of the boys and 17 of the girls can swim. There are 9 boys and 11 girls at the camp who cannot swim.
What is the ratio of the number of children who can swim to the number of children who cannot swim?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field