. Your firm has discovered that unplanned grocery shopping has a significant impact on the family budget (and diet). Your colleague went shopping with the Runkles and found that they spend $350 per week at the grocery store and that this included very little in the way of actual food! They have to spend an additional $150 on other food items here and there throughout the week. By developing a meal plan based mainly on fresh fruit, vegetables and some meat and having a regular grocery order delivered to avoid impulsive purchases, your firm has worked out that the Runkles could reduce their weekly expenses by $145. If the Runkles save this amount into their superannuation fund and the fund earns 8 percent p.a., how much would they have saved over the next 15 years?