Nick, Jeremy, Zane and Oliver went shopping with a total of $543. After shopping, they had a total of $141 left. Jeremy spent $80. The amount Zane spent was ⁵₆ the amount spent by Nick. The total amount spent by Nick and Jeremy was $50 less than the total amount spent by Zane and Oliver. How much did Nick and Oliver spend altogether?

	Nick	Jeremy	Zane	Oliver	Total
Before					$543
Change	- 6 u	- $80	- 5 u	- ?	- $402
After					$141

Total amount that Nick, Jeremy, Zane and Oliver spent
= 543 - 141
= $402

Total amount that Nick and Jeremy spent
= 6 u + 80

Total amount that Zane and Oliver spent
= 6 u + 80 + 50
= 6 u + 130 

Total amount that Nick, Jeremy, Zane and Oliver spent
= 6 u + 80 + 6 u + 130
= 12 u + 210 

12 u + 210 = 402
12 u = 402 - 210
12 u = 192 

1 u = 192 ÷ 12 = 16

Total amount that Jeremy and Zane spent
= 5 u + 80
= 5 x 16 + 80
= 80 + 80
= $160

Total amount that Nick and Oliver spent
= 402 - 160
= $242

Answer(s): $242