There are some people in a cinema.
of the people in the cinema are children.
For the children in the cinema,
number of girls : number of boys = 2:7.
There are 170 girls in the cinema.
Work out the number of adults in the cinema.

Frank is lending $1,000 to sarah for two years. frank and sarah agree that frank should earn a real return of 4 percent per year. instructions: a. the cpi (times 100) is 100 at the time that frank makes the loan. it is expected to be 113 in one year and 127.7 in two years. what nominal rate of interest should frank charge sarah?