In July 2011, in the economy of Sandy Island, 10,000 people were employed and 1,000 were unemployed. During August 2011, 80 people lost their jobs and didn't look for new ones, 20 people quit their jobs and retired, 150 people who had looked for work were hired, 50 people became discouraged workers, and 40 new graduates looked for work.

find out the unemployment rate for July 2011. Show all your work.

find out the unemployment rate for August 2011. Show all your work.