Mrs Kok gave Gabby and Shannon some money each on Thursday. On Friday, Gabby gave ¹₆ of the amount she had to Shannon. On Saturday, Shannon gave ¹₃ of the amount she had to Gabby. In the end, Gabby had $41 and Shannon had $22. How much did Shannon had more than Gabby at first?

	Gabby	Shannon	Total
Before 1	6 u	?	$63
Change 1	- 1 u	+ 1 u
After 1	5 u	3 p	$63
Before 2	$41 - 1 p	3 p	$63
Change 2	+ 1 p	- 1 p
After 2	$41	2 p ($22)	$63

Amount that Shannon had in the end = 2 p

2 p = 22

1 p = 22 ÷ 2 = 11

Working backwards.

Amount that Gabby had after giving to Shannon on Friday
= 41 - 1 p
= 41 - 11
= $30

5 u = 30

1 u = 30 ÷ 5 = 6

Amount that Gabby had at first
= 6 u
= 6 x 6
= $36

Total amount that Gabby and Shannon had 
= 41 + 22
= $63

Amount that Shannon had at first
= 63 - 36
= $27

Amount that Gabby had more than Shannon
= 36 - 27 
= $9

Answer(s): $9