Carl, Henry, Japheth and Eric went shopping with a total of $509. After shopping, they had a total of $59 left. Henry spent $70. The amount Japheth spent was ⁴₇ the amount spent by Carl. The total amount spent by Carl and Henry was $-68 less than the total amount spent by Japheth and Eric. How much did Carl and Eric spend altogether?

	Carl	Henry	Japheth	Eric	Total
Before					$509
Change	- 7 u	- $70	- 4 u	- ?	- $450
After					$59

Total amount that Carl, Henry, Japheth and Eric spent
= 509 - 59
= $450

Total amount that Carl and Henry spent
= 7 u + 70

Total amount that Japheth and Eric spent
= 7 u + 70 + -68
= 7 u + 2 

Total amount that Carl, Henry, Japheth and Eric spent
= 7 u + 70 + 7 u + 2
= 14 u + 72 

14 u + 72 = 450
14 u = 450 - 72
14 u = 378 

1 u = 378 ÷ 14 = 27

Total amount that Henry and Japheth spent
= 4 u + 70
= 4 x 27 + 70
= 108 + 70
= $178

Total amount that Carl and Eric spent
= 450 - 178
= $272

Answer(s): $272