Calculate the dollar rates of return on the following assets:

a. A painting whose price rises from 200 to 250 in a year.

b. A bottle of a rare Burgundy, Domaine de la Romane-Conti 1978, whose price

rises from 255 to 275 between 2013 and 2014.

c. A 10,000 deposit in a London bank in a year when the interest rate on pounds is

10 percent and the exchange rate moves from 1.5 per pound to 1.38 per

pound.