The figures are invented. (i) The income elasticity of demand for air travel is +2.5. An airline sells 50,000 tickets a month. Average income falls by 4%. Calculate the new number of tickets sold per month. [2] (ii) The income elasticity of demand for bread is +0.4. Sales of bread rise from 5,000 to 5,100 loaves a week because of a change in income. Calculate the percentage change in income. [2]

Paper 2-style short part (standalone practice; not an IB question).