John and Lisa both want to invest some money in the stock market. Lisa is a ”premium customer” at HSBC and does not need to pay any administrative fee on invested fund. John is not a premium customer and has to pay a 0.25% fee. Both invest £5,000 in a product that returns 5% a year with certainty (note: because of the fee he has to pay, John will only get a return of 4.75%). After 30 years, how much more will Lisa have than John? To be a premium customer, Lisa have to pay £12 a year. The interest rate is 5%. How does that change the result in (i)
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