Evans buys unit trusts and invests for income. He invested £50,000 in a unit trust with an offer price of £125 per unit, and sold the units after 5 years at £162 per unit. During this period he received income from the units of £6,200. This income was not reinvested in units.
(a) Calculate
(i) the number of units purchased
(ii) the excess of income over expenditure