A factory uses 1/5 of a barrel of raisins in each batch of granola bars. Yesterday, the factory used 2/7 of a barrel of raisins. How many batches of granola bars did the factory make yesterday?

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