Warren and Zane had 93 croissants altogether. After Warren ate ¹₅ of his croissants and Zane ate 8 croissants, the number of croissants Zane had left was thrice the number of croissants Warren had left. How many more croissants did Zane have than Warren at first?

	Warren	Zane	Total
Before	5 u	12 u + 8	93
Change	- 1 u	- 8
After	4 u
Comparing Warren and Zane in the end	1x4 = 4 u	3x4 = 12 u

The number of croissants that Warren had in the end is the same. Make the number of croissants that Warren had in the end the same.  LCM of 4 and 1 is 4.

Total number of croissants at first
= 5 u + 12 u + 8
= 17 u + 8

17 u + 8 = 93
17 u = 93 - 8
17 u = 85 

1 u = 85 ÷ 17 = 5

Number of croissants that Warren had at first
= 5 u
= 5 x 5
= 25

Number of croissants that Zane had at first
= 93 - 25
= 68

Number of croissants that Zane had more than Warren at first
= 68 - 25
= 43

Answer(s): 43