Vaidev, Warren, Glen and Ivan went shopping with a total of $880. After shopping, they had a total of $123 left. Warren spent $30. The amount Glen spent was ⁵₈ the amount spent by Vaidev. The total amount spent by Vaidev and Warren was $425 less than the total amount spent by Glen and Ivan. How much did Vaidev and Ivan spend altogether?

	Vaidev	Warren	Glen	Ivan	Total
Before					$880
Change	- 8 u	- $30	- 5 u	- ?	- $757
After					$123

Total amount that Vaidev, Warren, Glen and Ivan spent
= 880 - 123
= $757

Total amount that Vaidev and Warren spent
= 8 u + 30

Total amount that Glen and Ivan spent
= 8 u + 30 + 425
= 8 u + 455 

Total amount that Vaidev, Warren, Glen and Ivan spent
= 8 u + 30 + 8 u + 455
= 16 u + 485 

16 u + 485 = 757
16 u = 757 - 485
16 u = 272 

1 u = 272 ÷ 16 = 17

Total amount that Warren and Glen spent
= 5 u + 30
= 5 x 17 + 30
= 85 + 30
= $115

Total amount that Vaidev and Ivan spent
= 757 - 115
= $642

Answer(s): $642