Reggie, Ian, Xavier and Simon went shopping with a total of $774. After shopping, they had a total of $101 left. Ian spent $100. The amount Xavier spent was ⁵₈ the amount spent by Reggie. The total amount spent by Reggie and Ian was $89 less than the total amount spent by Xavier and Simon. How much did Reggie and Simon spend altogether?

	Reggie	Ian	Xavier	Simon	Total
Before					$774
Change	- 8 u	- $100	- 5 u	- ?	- $673
After					$101

Total amount that Reggie, Ian, Xavier and Simon spent
= 774 - 101
= $673

Total amount that Reggie and Ian spent
= 8 u + 100

Total amount that Xavier and Simon spent
= 8 u + 100 + 89
= 8 u + 189 

Total amount that Reggie, Ian, Xavier and Simon spent
= 8 u + 100 + 8 u + 189
= 16 u + 289 

16 u + 289 = 673
16 u = 673 - 289
16 u = 384 

1 u = 384 ÷ 16 = 24

Total amount that Ian and Xavier spent
= 5 u + 100
= 5 x 24 + 100
= 120 + 100
= $220

Total amount that Reggie and Simon spent
= 673 - 220
= $453

Answer(s): $453