Ahmad, Reggie, Cody and Bryan went shopping with a total of $923. After shopping, they had a total of $149 left. Reggie spent $20. The amount Cody spent was ²₃ the amount spent by Ahmad. The total amount spent by Ahmad and Reggie was $602 less than the total amount spent by Cody and Bryan. How much did Ahmad and Bryan spend altogether?

	Ahmad	Reggie	Cody	Bryan	Total
Before					$923
Change	- 3 u	- $20	- 2 u	- ?	- $774
After					$149

Total amount that Ahmad, Reggie, Cody and Bryan spent
= 923 - 149
= $774

Total amount that Ahmad and Reggie spent
= 3 u + 20

Total amount that Cody and Bryan spent
= 3 u + 20 + 602
= 3 u + 622 

Total amount that Ahmad, Reggie, Cody and Bryan spent
= 3 u + 20 + 3 u + 622
= 6 u + 642 

6 u + 642 = 774
6 u = 774 - 642
6 u = 132 

1 u = 132 ÷ 6 = 22

Total amount that Reggie and Cody spent
= 2 u + 20
= 2 x 22 + 20
= 44 + 20
= $64

Total amount that Ahmad and Bryan spent
= 774 - 64
= $710

Answer(s): $710