The exchange rate between non-fixed currencies continuously fluctuates. the table below shows the exchange rate of the us dollar to the euro over the course of six days. day $: € monday 1: 0.7102 tuesday 1: 0.7053 wednesday 1: 0.6869 thursday 1: 0.6910 friday 1: 0.7273 saturday 1: 0.7544 if rodney traded €228.75 for $314.52, when did he make his exchange?