Chapter 2 - The Key Principles of Economics - Exercises - 2.5 The Real-Nominal Principle - Page 47: 5.7

Number of baskets per week 1970-4.1 1988-3.1 Real value decreased.

$\$160\div\frac{\$39}{1\ basket}=4.1\ baskets$ $\$360\div\frac{\$118}{1\ basket}=3.1\ baskets$ In 1988 few baskets of goods could purchased with a welfare payment, so the value decreased.