Two cities are 210 km apart. a train traveled this distance in 42 3 hours and then made the return trip at a speed of 502 5 km/h. how many times greater (or less) was the train’s speed on the return trip?

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?