It's not often that a downturn in the economy leads to an upturn in consumer spending. But that's what's happening in one sector of the retail...

It’s not often that a downturn in the economy leads to an upturn in consumer spending. But that’s what’s happening in one sector of the retail industry. While many of the big chains in Western Australia are reporting a slump in sales, second-hand clothing shops run by charity groups are doing a roaring trade.

a. Use a graph to illustrate a family’s indifference curves for used clothing and other goods.b. In your graph in part (a), draw two budget lines to show the effect of a fall in income on the quantity of used clothing purchased.