Ben, Dylan and Chester collected stickers in the ratio of 12 : 4 : 5. After Chester gave ³₅ to Ben and Dylan, Chester had 348 less stickers than Ben. The number of stickers that Dylan had increased by 35%. How many stickers did Ben and Chester have in the end?

	Ben	Dylan	Chester
Before	12 u	4 u	5 u
Change	+ 1.6 u	+ 1.4 u	- 3 u
After	13.6 u	5.4 u	2 u

Number of stickers that Chester gave to Ben and Dylan
= ³₅ x 5 u
= 3 u

Number of stickers that Dylan received from Chester
= ³⁵₁₀₀ x 4 u
= 1.4 u

Number of stickers that Ben received from Chester
= 3 u - 1.4 u
= 1.6 u

Number of less stickers that Chester had less than Ben
= 13.6 u - 2 u 
= 11.6 u

11.6 u = 348

1 u = 348 ÷ 11.6 = 30

Number of stickers that Ben and Chester had
= 13.6 u + 2 u
= 15.6 u
= 15.6 x 30
= 468

Answer(s): 468