Tom, Ivan, Mark and Eric went shopping with a total of $815. After shopping, they had a total of $119 left. Ivan spent $30. The amount Mark spent was ⁴₇ the amount spent by Tom. The total amount spent by Tom and Ivan was $482 less than the total amount spent by Mark and Eric. How much did Tom and Eric spend altogether?

	Tom	Ivan	Mark	Eric	Total
Before					$815
Change	- 7 u	- $30	- 4 u	- ?	- $696
After					$119

Total amount that Tom, Ivan, Mark and Eric spent
= 815 - 119
= $696

Total amount that Tom and Ivan spent
= 7 u + 30

Total amount that Mark and Eric spent
= 7 u + 30 + 482
= 7 u + 512 

Total amount that Tom, Ivan, Mark and Eric spent
= 7 u + 30 + 7 u + 512
= 14 u + 542 

14 u + 542 = 696
14 u = 696 - 542
14 u = 154 

1 u = 154 ÷ 14 = 11

Total amount that Ivan and Mark spent
= 4 u + 30
= 4 x 11 + 30
= 44 + 30
= $74

Total amount that Tom and Eric spent
= 696 - 74
= $622

Answer(s): $622