Flynn, Albert and Daniel have some stickers. The ratios of their stickers are as follows:

Flynn : (Flynn + Albert + Daniel) = 2 : 5
Albert : (Flynn + Daniel) = 1 : 3

Daniel has 16 stickers more than Albert. In the end, Daniel gives away all he has to Albert and Flynn so that both Albert and Flynn end up with the same number of stickers, how many stickers has Flynn received from Daniel?

Albert	Daniel	Flynn	Total
3x4		2x4	5x4
1x5	3x5		4x5
5 u	7 u	8 u	20 u

The total number of stickers is repeated.  Make the total number of stickers the same.  LCM of 5 and 4 is 20.

Number of stickers that Daniel has more than Albert
= 7 u - 5 u
= 2 u

2 u = 16

1 u = 16 ÷ 2 = 8

	Albert	Daniel	Flynn
Before	5 u	7 u	8 u
Change	+ 5 u	- 7 u	+ 2 u
After	10 u	0 u	10 u

Number of stickers that Flynn has received from Daniel
= 10 u - 8 u 
= 2 u
= 2 x 8
= 16

Answer(s): 16