Yoko and Fabian collect erasers and stickers. Fabian has 100 less erasers than stickers. Fabian has 4 times the number of erasers Yoko has, and Yoko has 20% more stickers than Fabian. After Yoko gives Fabian all of her erasers and Fabian gives Yoko 70% of his stickers, Fabian has 46 more erasers than stickers. Find the number of stickers Yoko has at first.

Yoko		Fabian
Stickers	Erasers	Stickers	Erasers
4.8 u + 120	1 u	4 u + 100	4 u
+ 2.8 u + 70	- 1 u	- 2.8 u - 70	+ 1 u
7.6 u + 190	0	1.2 u + 30	5 u

100%+ 20% = 120% 

120% x 4 u
= ¹²⁰₁₀₀ x 4 u
= 4.8 u

120% x 100
= ¹²⁰₁₀₀ x 100
= 120 

70% x 4 u
= ⁷⁰₁₀₀ x 4 u
= 2.8 u  

70% x 100 
= ⁷⁰₁₀₀ x 100
= 70 

If another 46 stickers are given to Fabian, he will have equal number of stickers and erasers in the end.
5 u = 1.2 u + 30 + 46
5 u - 1.2 u = 76
3.8 u = 76

1 u = 76 ÷ 3.8 = 20

Number of stickers that Yoko has at first
= 4.8 u + 120
= 4.8 x 20 + 120
= 96 + 120
= 216
 
Answer(s): 216